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Demand Response Spinning Reserve Demonstration

Description: The Demand Response Spinning Reserve project is a pioneeringdemonstration of how existing utility load-management assets can providean important electricity system reliability resource known as spinningreserve. Using aggregated demand-side resources to provide spinningreserve will give grid operators at the California Independent SystemOperator (CAISO) and Southern California Edison (SCE) a powerful, newtool to improve system reliability, prevent rolling blackouts, and lowersystem operating costs.
Date: May 1, 2007
Creator: Eto, Joseph H.; Nelson-Hoffman, Janine; Torres, Carlos; Hirth,Scott; Yinger, Bob; Kueck, John et al.
Partner: UNT Libraries Government Documents Department

California customer load reductions during the electricity crisis: Did they help to keep the lights on?

Description: During summer 2001, Californians reduced electricity usage by 6 percent and average monthly peak demand by 8 percent, compared to summer 2000. These load reductions played an important role in avoiding the hundreds of hours of rotating power outages predicted several months prior. Many factors affected electricity use and peak demand in summer 2001, including weather, changes in the State's economy, and deliberate consumer responses to a variety of stimuli associated with the crisis. This paper assesses the roles played by these contributing factors, with a special focus on the extraordinary efforts made by Californians to reduce electricity consumption. We review the role of media coverage and informational campaigns on public awareness and the impact of rate increases and a variety of publicly funded programs in reducing electricity consumption. We also draw lessons for other regions that may be faced with the prospect of electricity shortages.
Date: May 1, 2002
Creator: Goldman, Charles A.; L., Barbose Galen & Eto, Joseph H.
Partner: UNT Libraries Government Documents Department

Energy Security and Restoration Exercise Program/Best Practices and Information Sharing

Description: The first year of this cooperative agreement focused on the following elements: curriculum development and presentation, curriculum maintenance, enhancements, and effectiveness, and smart card initiative. During the second year of this grant, with redirection from DOE, the IUOE modified its mission statement under the cooperative agreement. It states: 'The mission of the IUOE is to provide expertise to provide best practices, information sharing, and develop scenarios and conduct exercises ranging in size and complexity from table top to national level to prepare all stakeholders to protect and restore energy infrastructure should an event, terrorist or natural, occur'. The Program developed a number of products under this Cooperative Agreement. These products include: FOSTER (Facility Operations Safety Training Event Response) Curriculum and Training Models, Alternative Energy Supply - Generators Training Module, Liquefied Natural Gas Training Module, Education Program - Distributed Generations, Compendium of Resources and References, Energy Security and Restoration Training Manual, Manual of Situations and Scenarios Developed for Emergency Exercises, Manual of Best Practices/Lessons Learned for Energy Load Management, Training Plan, Strategic Information and Exercise Plan, National Certification Plan Report, and a Smart Card Project Report.
Date: March 30, 2009
Creator: McCabe, Barbara & Kovach, John
Partner: UNT Libraries Government Documents Department

Dynamic load balancing of matrix-vector multiplications on roadrunner compute nodes

Description: Hybrid architectures that combine general purpose processors with accelerators are being adopted in several large-scale systems such as the petaflop Roadrunner supercomputer at Los Alamos. In this system, dual-core Opteron host processors are tightly coupled with PowerXCell 8i processors within each compute node. In this kind of hybrid architecture, an accelerated mode of operation is typically used to offload performance hotspots in the computation to the accelerators. In this paper we explore the suitability of a variant of this acceleration mode in which the performance hotspots are actually shared between the host and the accelerators. To achieve this we have designed a new load balancing algorithm, which is optimized for the Roadrunner compute nodes, to dynamically distribute computation and associated data between the host and the accelerators at runtime. Results are presented using this approach for sparse and dense matrix-vector multiplications that show load-balancing can improve performance by up to 24% over solely using the accelerators.
Date: January 1, 2009
Creator: Sancho Pitarch, Jose Carlos
Partner: UNT Libraries Government Documents Department

Opportunities for Energy Efficiency and Automated Demand Response in Industrial Refrigerated Warehouses in California

Description: This report summarizes the Lawrence Berkeley National Laboratory's research to date in characterizing energy efficiency and open automated demand response opportunities for industrial refrigerated warehouses in California. The report describes refrigerated warehouses characteristics, energy use and demand, and control systems. It also discusses energy efficiency and open automated demand response opportunities and provides analysis results from three demand response studies. In addition, several energy efficiency, load management, and demand response case studies are provided for refrigerated warehouses. This study shows that refrigerated warehouses can be excellent candidates for open automated demand response and that facilities which have implemented energy efficiency measures and have centralized control systems are well-suited to shift or shed electrical loads in response to financial incentives, utility bill savings, and/or opportunities to enhance reliability of service. Control technologies installed for energy efficiency and load management purposes can often be adapted for open automated demand response (OpenADR) at little additional cost. These improved controls may prepare facilities to be more receptive to OpenADR due to both increased confidence in the opportunities for controlling energy cost/use and access to the real-time data.
Date: May 11, 2009
Creator: Lekov, Alex; Thompson, Lisa; McKane, Aimee; Rockoff, Alexandra & Piette, Mary Ann
Partner: UNT Libraries Government Documents Department

Scaling of X pinches from 1 MA to 6 MA.

Description: This final report for Project 117863 summarizes progress made toward understanding how X-pinch load designs scale to high currents. The X-pinch load geometry was conceived in 1982 as a method to study the formation and properties of bright x-ray spots in z-pinch plasmas. X-pinch plasmas driven by 0.2 MA currents were found to have source sizes of 1 micron, temperatures >1 keV, lifetimes of 10-100 ps, and densities >0.1 times solid density. These conditions are believed to result from the direct magnetic compression of matter. Physical models that capture the behavior of 0.2 MA X pinches predict more extreme parameters at currents >1 MA. This project developed load designs for up to 6 MA on the SATURN facility and attempted to measure the resulting plasma parameters. Source sizes of 5-8 microns were observed in some cases along with evidence for high temperatures (several keV) and short time durations (<500 ps).
Date: September 1, 2010
Creator: Bland, Simon Nicholas (Imperial College, London, United Kingdom); McBride, Ryan D.; Wenger, David Franklin; Sinars, Daniel Brian; Chittenden, Jeremy Paul (imperial College, London, United Kingdom); Pikuz, Sergei A. (Cornell University, Ithaca, NY) et al.
Partner: UNT Libraries Government Documents Department

Demonstration of Smart Building Controls to Manage Building Peak Loads: Innovative Non-Wires Technologies

Description: As a part of the non-wires solutions effort, BPA in partnership with Pacific Northwest National Laboratory (PNNL) is exploring the use of two distributed energy resources (DER) technologies in the City of Richland. In addition to demonstrating the usefulness of the two DER technologies in providing peak demand relief, evaluation of remote direct load control (DLC) is also one of the primary objectives of this demonstration. The concept of DLC, which is used to change the energy use profile during peak hours of the day, is not new. Many utilities have had success in reducing demand at peak times to avoid building new generation. It is not the need for increased generation that is driving the use of direct load control in the Northwest, but the desire to avoid building additional transmission capacity. The peak times at issue total between 50 and 100 hours a year. A transmission solution to the problem would cost tens of millions of dollars . And since a ?non wires? solution is just as effective and yet costs much less, the capital dollars for construction can be used elsewhere on the grid where building new transmission is the only alternative. If by using DLC, the electricity use can be curtailed, shifted to lower use time periods or supplemented through local generation, the existing system can be made more reliable and cost effective.
Date: December 22, 2004
Creator: Katipamula, Srinivas & Hatley, Darrel D.
Partner: UNT Libraries Government Documents Department

Pacific Northwest GridWise™ Testbed Demonstration Projects; Part II. Grid Friendly™ Appliance Project

Description: Fifty residential electric water heaters and 150 new residential clothes dryers were modified to respond to signals received from underfrequency, load-shedding appliance controllers. Each controller monitored the power-grid voltage signal and requested that electrical load be shed by its appliance whenever electric power-grid frequency fell below 59.95 Hz. The controllers and their appliances were installed and monitored for more than a year at residential sites at three locations in Washington and Oregon. The controllers and their appliances responded reliably to each shallow underfrequency event—an average of one event per day—and shed their loads for the durations of these events. Appliance owners reported that the appliance responses were unnoticed and caused little or no inconvenience for the homes’ occupants.
Date: October 1, 2007
Creator: Hammerstrom, Donald J.; Brous, Jerry; Chassin, David P.; Horst, Gale R.; Kajfasz, Robert; Michie, Preston et al.
Partner: UNT Libraries Government Documents Department

End-use load control for power system dynamic stability enhancement

Description: Faced with the prospect of increasing utilization of the transmission and distribution infrastructure without significant upgrade, the domestic electric power utility industry is investing heavily in technologies to improve network dynamic performance through a program loosely referred to as Flexible AC Transmission System (FACTS). Devices exploiting recent advances in power electronics are being installed in the power system to offset the need to construct new transmission lines. These devices collectively represent investment potential of several billion dollars over the next decade. A similar development, designed to curtail the peak loads and thus defer new transmission, distribution, and generation investment, falls under a category of technologies referred to as demand side management (DSM). A subset of broader conservation measures, DSM acts directly on the load to reduce peak consumption. DSM techniques include direct load control, in which a utility has the ability to curtail specific loads as conditions warrant. A novel approach has been conceived by Pacific Northwest National Laboratory (PNNL) to combine the objectives of FACTS and the technologies inherent in DSM to provide a distributed power system dynamic controller. This technology has the potential to dramatically offset major investments in FACTS devices by using direct load control to achieve dynamic stability objectives. The potential value of distributed versus centralized grid modulation has been examined by simulating the western power grid under extreme loading conditions. In these simulations, a scenario is analyzed in which active grid stabilization enables power imports into the southern California region to be increased several hundred megawatts beyond present limitations. Modeling results show distributed load control is up to 30 percent more effective than traditional centralized control schemes in achieving grid stability.
Date: February 1, 1997
Creator: Dagle, J. E.; Winiarski, D. W. & Donnelly, M. K.
Partner: UNT Libraries Government Documents Department

Impact of information and communications technologies on residental customer energy services

Description: This study analyzes the potential impact of information and communications technologies on utility delivery of residential customer energy services. Many utilities are conducting trials which test energy-related and non-energy services using advanced communications systems.
Date: October 1, 1996
Creator: Goldman, C.; Kempton, W.; Eide, A. & Iyer, M.
Partner: UNT Libraries Government Documents Department

Demand-side management implementation and verification at Fort Drum, New York

Description: Through the Facility Energy Decision Screening (FEDS) process, the US Army Forces Command (FORSCOM) has identified present value savings of nearly $47 million in cost-effective energy conservation measures (ECMs) at Fort Drum, New York. With associated costs of more than $16 million (1992 $), the measures provide a net present value of $30.6 million for all identified projects. By implementing all cost-effective ECMs, Fort Drum can reduce its annual energy use by more than 230,000 MBtu (11% of its fossil energy consumption) and more than 27,000 MWh (32% of its electric energy consumption). The annual cost of energy services will decrease by $2.8 million (20%) at current energy rates. The servicing utility (Niagara Mohawk Power Corporation) has informally agreed to finance and implement cost-effective ECMs and to participate in the verification of energy savings. Verification baselining is under way; implementation of retrofit projects is expected to begin in late 1994. The utility-administered financing and contracting arrangements and the alternative federal programs for implementing the projects are described. The verification protocols and sampling plans for audit, indirect, and direct measurement levels of verification and the responsibilities of Fort Drum, the utility, the energy service companies (ESCOs), and Pacific Northwest Laboratory (PNL) in the verification process are also presented. A preliminary weather-normalized model of baseline energy consumption has been developed based on a full year`s metered data.
Date: December 1, 1994
Creator: Armstrong, P.R.; Dixon, D.R.; Richman, E.E. & Rowley, S.E.
Partner: UNT Libraries Government Documents Department

Model documentation report: Commercial Sector Demand Module of the National Energy Modeling System

Description: This report documents the objectives, analytical approach and development of the National Energy Modeling System (NEMS) Commercial Sector Demand Module. The report catalogues and describes the model assumptions, computational methodology, parameter estimation techniques, model source code, and forecast results generated through the synthesis and scenario development based on these components. This report serves three purposes. First, it is a reference document providing a detailed description for model analysts, users, and the public. Second, this report meets the legal requirement of the Energy Information Administration (EIA) to provide adequate documentation in support of its statistical and forecast reports (Public Law 93-275, section 57(b)(1)). Third, it facilitates continuity in model development by providing documentation from which energy analysts can undertake model enhancements, data updates, and parameter refinements as future projects.
Date: February 1, 1995
Partner: UNT Libraries Government Documents Department

Estimating effects of energy planning on environmental impacts in the Western United States

Description: As part of their long-term planning process, utilities and government agencies are choosing power generation and conservation strategies that will effect environmental interactions for decades to come. In the US, power marketing administrations within the US Department of Energy have a strong influence over the strategies to be implemented in large multi-state regions. Pacific Northwest Laboratories (PNL) prepared environmental impact statements (EIS) for two power marketing agencies, the Western Area Power Administration (Western) and Bonneville Power Administration (Bonneville). The Western EIS assessed the effects of integrated resource planing (IRP) on the public utilities Western serves, while the Bonneville EIS assessed the effects of acquiring new energy resources in the pacific Northwest. The results were found using models that simulated utility systems. In both cases, environmental impacts were reduced when the conservation strategy in question was considered. This paper describes the results of the environmental analyses for the two agencies and compares the results with those of another simplified approach that relies on attributing emissions of new resources based on an extrapolation of existing capacity.
Date: December 1, 1994
Creator: Baechler, M.C. & Cothran, J.N.
Partner: UNT Libraries Government Documents Department

Ancillary-service details: regulation, load following, and generator response

Description: The purpose of this report is to examine empirically these intrahour and interhour load changes and the responses of a utility`s generating resources to those load changes. We analyze data, primarily from one control area, to see how it maintains ACE close to zero in an effort to meet the A1 and A2 criteria. Overall, we estimate that load following costs US electric utilities over one billion dollars a year. We first test alternative ways to identify trends over multihour periods using both regression analysis and rolling averages. Then, we consider several metrics for intrahour load following. Next we examine characteristics of load following for different time-averaging periods and compare the dynamics of loads and load following generation across these time periods. Finally, we consider the contribution of each load to the total load following requirements of the control area.
Date: September 1, 1996
Creator: Hirst, E. & Kirby, B.
Partner: UNT Libraries Government Documents Department

What`s new in federal energy management: FEMP program overview. Federal energy saver showcases

Description: To promote widespread Federal energy efficiency, agencies are showcasing their best energy efficiency, water conserving, and solar and other renewable energy technologies. To highlight these successful energy-efficient projects, Executive Order 12902 directs agencies to designate at least one newly constructed or existing building as a showcase facility. At existing facilities, agencies must also try to incorporate cogeneration and indoor air quality improvements. Agencies are directed to develop and implement effective plans to make these showcase projects happen. Project successes will show the strength of partnering with other agencies, energy services companies, utilities, and national laboratories, and of using the US Department of Energy Federal Energy Management Program (FEMP) as a resource. The goal is Federal facilities operating at peak efficiency. A Federal Energy Saver Showcase plaque is prominently displayed at each showcase site, notifying visitors they are entering a government building that successfully conserves energy and water and saves taxpayer dollars.
Date: August 1, 1996
Partner: UNT Libraries Government Documents Department

What`s new in federal energy management: FEMP program overview. SAVEnergy program

Description: The SAVEnergy Program provides direct assistance to Federal agencies in identifying and implementing energy efficiency and water conservation measures. The Energy Policy Act of 1992 (EPAct) and Executive Order 12902 require that Federal agencies reduce the energy consumed in Federal buildings. The Executive Order increases the goal to a 30% reduction, compared with 1985, by 2005. In addition, agencies are required, to the maximum extent possible, to install all energy and water conservation measures with paybacks of less than 10 years. To help meet these goals, the US Department of Energy`s (DOE`s) Federal Energy management Program (FEMP) recently initiated the SAVEnergy Program. The SAVEnergy approach has three key elements: The Action Plan with recommended conservation actions and complete proposals on how the agency can implement them; The Action Team to implement the SAVEnergy Action Plan; The FEMPTracks database to evaluate the SAVEnergy Program (and all other FEMP programs) and record progress toward conservation goals.
Date: August 1, 1996
Partner: UNT Libraries Government Documents Department

Development and application of a high-speed, high-resolution data acquisition system for monitoring power at the service entrance to buildings

Description: A non-intrusive load monitoring system (NILMS) was developed and tested to determine its capabilities and examine ways that the system can supplement the understanding of how energy is used in a building. The investigation of the system as a method for obtaining short-term building energy use and demand data faster, as less cost, with less complexity, and less intrusively than from conventional submetering is described in this report. Data acquisition hardware and software, a power transducer, and current transformers were assembled into a system that could be used to sample the instantaneous real and reactive power coming into a building. The system was used to collect power profiles at a commercial and a residential building. The NILMS can sample power at low speeds (one sample per hour or less) and at speeds exceeding 100 Hz. Large changes in building power such as those due to central heating and cooling systems, water heaters, or banks of lights can easily be discriminated from total building power profiles collected by the system. Smaller loads, less than 1 or 2 kW, can be resolved when there is little ``noise`` in the power profile. Very small loads, less than 100 W, can be resolved in a residential application. Resolution becomes more difficult as larger and more frequent fluctuations occur. The ability of the system to easily collect valuable, short-term building power profiles, which permit individual loads to be determined (resolved), makes the system attractive for a number of applications. The system could prove very useful for measuring short-term energy use and demand, assisting building energy auditors in assessing building deficiencies, providing short-term performance data for validating engineering-based savings estimates and calibrating computer-based building performance models, and for validating, developing, and/or improving building and building system operating strategies.
Date: February 1, 1995
Creator: Sharp, T.R.
Partner: UNT Libraries Government Documents Department

Defining intra- and interhour load swings

Description: Electricity consumption varies with time. These temporal variations include moment-to-moment fluctuations plus hour-to-hour changes associated with diurnal, weekly, and seasonal patterns. The problem naturally splits into two time frames: (1) fast fluctuations, on the order of seconds to minutes, and (2) slower fluctuations, on the order of an hour or longer. Fast fluctuations in aggregate load result primarily from the random movements of individual loads. Slower fluctuations result from common external causes, such as time of day, day of the week, and weather. This study empirically examines intra- and interhour load following. It develops methods to separate intra- and interhour load fluctuations, identifies the key features of each, and shows how they differ from each other.
Date: September 1, 1996
Creator: Hirst, E. & Kirby, B.
Partner: UNT Libraries Government Documents Department

Energy impacts of attic duct retrofits in Sacramento houses

Description: Inefficiencies in air distribution systems have been identified as a major source of energy loss in US sunbelt homes. Research indicates that approximately 30--40% of the thermal energy delivered to the ducts passing through unconditioned spaces is lost through air leakage and conduction through the duct walls. Field experiments over the past several years have well documented the expected levels of air leakage and the extent to which that leakage can be reduced by retrofit. Energy savings have been documented to a more limited extent, based upon a few field studies and simulation model results. Simulations have also indicated energy loss through ducts during the off cycle caused by thermosiphon-induced flows, however this effect had not been confirmed experimentally. A field study has been initiated to separately measure the impacts of combined duct leak sealing and insulation retrofits, and to optimize a retrofit protocol for utility DSM programs. This paper describes preliminary results from 6 winter and 5 summer season houses. These retrofits cut overall duct leakage area approximately 64%, which translated to a reduction in envelope ELA of approximately 14%. Wrapping ducts and plenums with R-6 insulation translated to a reduction in average flow-weighted conduction losses of 33%. These experiments also confirmed the appropriateness of using duct ELA and operating pressures to estimate leakage flows for the population, but indicated significant variations between these estimates and measured flows on a house by house basis. In addition, these experiments provided a confirmation of the predicted thermosiphon flows, both under winter and summer conditions. Finally, average material costs were approximately 20% of the total retrofit costs, and estimates of labor required for retrofits based upon these experiments were: 0.04 person-hrs/cm{sup 2} of duct sealed and 0.21 person-hrs/m{sup 2} of duct insulated.
Date: August 1, 1994
Creator: Jump, D. & Modera, M.
Partner: UNT Libraries Government Documents Department

What`s new in federal energy management: FEMP program overview. Federal Energy Management Program

Description: The US government has an enormous cost-saving opportunity as the largest energy user in the world. In 1994, the government spent $8 billion for its 500,000 buildings, it vehicles, and process energy. The US Department of Energy (DOE), Federal Energy Management Program (FEMP) reduces the cost of government and makes it work better through energy efficiency, use of renewable energy, and water conservation. FEMP leads Federal energy efficiency efforts and helps Federal energy managers identify and procure the best, most cost-effective energy-saving projects. It does this through proactive problem solving; an aggressive emphasis on increasing the number and quality of projects; and effective partnerships among agencies, utilities, the private sector, and states. Partnerships lead to increased motivation and education and reduced barriers to successful procurement. As the lead organization implementing legislation and Presidential direction for Federal energy efficiency, FEMP administers an interagency energy committee and task force and collaborates with the DOE national energy laboratories. FEMP works with energy service companies, energy savings product manufacturers, and utilities. This partnership will lead to a $1 billion investment by companies willing to invest in return for a share of the energy cost savings. With FEMP project financing, audits, training and technical assistance, and new technology demonstrations, agencies overcome obstacles to achieving widespread energy efficiency.
Date: August 1, 1996
Partner: UNT Libraries Government Documents Department

Electric Power annual 1996: Volume II

Description: This document presents a summary of electric power industry statistics. Data are included on electric utility retail sales of electricity, revenues, environmental information, power transactions, emissions, and demand-side management.
Date: December 1, 1997
Partner: UNT Libraries Government Documents Department

ANN - based distribution system reconfiguration

Description: This paper describes an Artificial Neural Network (ANN) - based distribution system reconfiguration scheme to reduce system loss. The ANN is trained for different load levels and different network topologies. The proposed scheme has been tested using a 38 - bus distribution system. The results are very promising.
Date: August 1, 1997
Creator: Momoh, J.A.; Wang, Yanchun & Rizy, D.T.
Partner: UNT Libraries Government Documents Department

Economic analysis of PV hybrid power system: Pinnacles National Monument

Description: PV hybrid electric power systems can offer an economically competitive alternative to engine generator (genset) systems in many off-grid applications. Besides the obvious `green` advantages of producing less noise and emissions, the PV hybrid can, in some cases, offer a lower life-cycle cost (LCC) then the genset. This paper evaluates the LCC of the 9.6 kWp PV hybrid power system installed by the National Park Services (NPS) at Pinnacles National Monument, CA. NPS motivation for installation of this hybrid was not based on economics, but rather the need to replace two aging diesel gensets with an alternative that would be quieter, fuel efficient, and more in keeping with new NPS emphasis on sustainable design and operations. In fact, economic analysis shows a lower 20-year LCC for the installed PV hybrid than for simple replacement of the two gensets. The analysis projects are net savings by the PV hybrid system of $83,561 and over 162,000 gallons of propane when compared with the genset-only system. This net savings is independent of the costs associated with environmental emissions. The effects of including emissions costs, according to NPS guidelines, is also discussed. 5 refs., 2 figs., 3 tabs.
Date: November 1, 1997
Creator: Rosenthal, A.; Durand, S.; Thomas, M. & Post, H.
Partner: UNT Libraries Government Documents Department

Ancillary-service details: Dynamic scheduling

Description: Dynamic scheduling (DS) is the electronic transfer from one control area to another of the time-varying electricity consumption associated with a load or the time-varying electricity production associated with a generator. Although electric utilities have been using this technique for at least two decades, its use is growing in popularity and importance. This growth is a consequence of the major changes under way in US bulk-power markets, in particular efforts to unbundle generation from transmission and to increase competition among generation providers. DS can promote competition and increase choices. It allows consumers to purchase certain services from entities outside their physical-host area and it allows generators to sell certain services to entities other than their physical host. These services include regulation (following minute-to-minute variations in load) and operating reserves, among others. Such an increase in the number of possible suppliers and customers should encourage innovation and reduce the costs and prices of providing electricity services. The purpose of the project reported here was to collect and analyze data on utility experiences with DS. Chapter 2 provides additional details and examples of the definitions of DS. Chapter 3 explains why DS might be an attractive service that customers and generators, as well as transmission providers, might wan to use. Chapter 4 presents some of the many current DS examples the authors uncovered in their interviews. Chapter 5 discusses the costs and cost-effectiveness of DS. Chapter 6 explains what they believe can and cannot be electronically moved from one control area to another, primarily in terms of the six ancillary services that FERC defined in Order 888. Chapter 7 discusses the need for additional research on DS.
Date: January 1, 1997
Creator: Hirst, E. & Kirby, B.
Partner: UNT Libraries Government Documents Department