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Standard Time Zones of the United States and adjacent Parts of Canada and Mexico as of October 1, 1935

Description: One map showing standard time zones of the United States as of October 1, 1935, with an updated map showing new boundaries in Georgia, Ohio, and Michigan. Notes on the first map describe the changes effective September 27, 1936 and November 23, 1941.
Date: 1935
Creator: Geological Survey (U.S.)
Partner: UNT Libraries Government Documents Department

Revisions of Ulmus and Zelkova in the Middle and Late Tertiary of Western North America

Description: Abstract: Examination of previously described and some undescribed leaves of Ulmus and Zelkova from the later Oligocene, Miocene, and Pliocene of western North America indicates that at least eight species of Ulmus and two species of Zelkova are represented. Three new species are described: Ulmus chaneyi, U. knowltoni, and Zelkova browni.
Date: 1977
Creator: Tanai, Toshimasa & Wolfe, Jack A.
Partner: UNT Libraries Government Documents Department

Cross-Border Energy Trade in North America: Present and Potential

Description: This report provides an overview of the United States' energy trade with Canada and Mexico. For the principal energy commodities, it summarizes estimates of the resource potential for the three countries, recent energy production, and expectations for future production.
Date: January 30, 2017
Creator: Parfomak, Paul W.; Campbell, Richard J. & Pirog, Robert
Partner: UNT Libraries Government Documents Department

North American Continental Margins : a Synthesis and Planning Workshop : Report of the North American Continental Margins Working Group for the U.S. Carbon Cycle Scientific Steering Group and Interagency Working Group

Description: Report of the findings and recommendations of the North American Continental Margins workshop held in Boulder Colorado in September of 2005 to assess the state of carbon cycle science in the margins surrounding North America.
Date: 2008
Creator: United States Carbon Cycle Science Program
Partner: UNT Libraries Government Documents Department

Correlation Papers: the Newark System

Description: From outline: The aim of this paper is to review the progress of our knowledge concerning a well defined system of rocks on'the Atlantic border, named the Newark system; to summarize the present state of information concerning it, and to discuss the bearing that its study has on principles of correlation.
Date: 1892
Creator: Russell, Israel Cook
Partner: UNT Libraries Government Documents Department

Correlation Papers: Archean and Algonkian

Description: From outline: This hook is a review of the present state of knowledge of the general structure of the pre-Cambrian rocks of the United States and Canada. The material contained in the historical chapters is of two kinds: Summaries of all articles pertaining to the subject considered, and summaries of the conclusions which appear to be established. The first represents the substance of the literature; the second brings together the important ascertained structural facts, and often times becomes a more or less extended discussion. The final chapter covers the same grounds as the historical chapters for the various pre-Cambrian in general successions proposed by different authors, and also contains a discussion of results and the principles upon which they are based. Within the chapters, individual districts or regions are given separate sections, and the summary of literature for each is arranged in chronological order.
Date: 1892
Creator: Van Hise, Charles Richard
Partner: UNT Libraries Government Documents Department

Results of Primary Triangulation

Description: From introduction: The triangulation of the U. S. Geological Survey is executed solely for the primary control of topographic work upon scales not exceeding 1: 62500. The extreme of accuracy has therefore not been sought, but only such a degree of accuracy as to insure that the maximum accumulated error be imperceptible upon the maps.
Date: 1894
Creator: Gannett, Henry
Partner: UNT Libraries Government Documents Department

Studies on the Drumming Behavior of North American Stoneflies (Plecoptera)

Description: Drumming behavior is described for the first time in 16 North American species of Plecoptera, and signals of a 17th species, Isogenoides zionensis, are further detailed. The effective distance over which drumming signals may be transmitted was tested for four communication modes. Results indicate that substratum vibrations are far superior to sound in the transmission of drumming signals, and that dense substrates such as rocks are poor channels for signal transfer. Long communication periods between stonefly pairs of Taeniopteryx burksi resulted in some alterations from initial signaling characteristics.
Date: May 1984
Creator: Zeigler, David D.
Partner: UNT Libraries

Natural History of the Swainson's Warbler

Description: Summary of Swainson's warbler, including history, geographic distribution, migration patterns, ecological relations, physical description, breeding biology, voice qualities, and feeding behavior.
Date: January 1971
Creator: Meanley, Brooke
Partner: UNT Libraries Government Documents Department

Revision of the North American Pocket Mice

Description: From introductory remarks: "Classification study of the North American pocket mouse based on about 170 specimens. Results of study increased recognized species to 18 and subspecies to 3 as well as shifting several well known names to other forms."
Date: October 25, 1889
Creator: Merriam, C. Hart
Partner: UNT Libraries Government Documents Department

[American Shrews]

Description: Brief summary of three genera of American shrews, including characteristics, habits, habitat, and skull, jaws, and teeth illustrations.
Date: December 31, 1895
Creator: Merriam, C. Hart & Miller, Gerrit S. (Gerrit Smith), 1869-1956
Partner: UNT Libraries Government Documents Department

Review of the Grizzly and Big Brown Bears of North America (Genus Ursus): with Description of a New Genus, Vetularctos

Description: Discusses distribution,sexual and age differences, specimens, and classification of North American grizzly and big brown bears. Describes and lists locations of species and subspecies. Mentions Vetularctos, a new genus related to Ursus.
Date: February 9, 1918
Creator: Merriam, C. Hart
Partner: UNT Libraries Government Documents Department