erc: who: Pflughoeft-Hassett, Debra F. what: MERCURY AND AIR TOXIC ELEMENT IMPACTS OF COAL COMBUSTION BY-PRODUCT DISPOSAL AND UTILIZATION when: 20030701 where: https://digital.library.unt.edu/ark:/67531/metadc785272/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/