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SHWRD Research Symposium (7th : 1981 : Philadelphia, Pa.): Land disposal : hazardous waste : proceedings of the seventh annual research symposium at Philadelphia, Pennsylvania, March 16-18, 1981, sponsored by the U.S. EPA, Office of Research & Development, Municipal Environmental Research Laboratory, Solid and Hazardous Waste Research Division (Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ;, 1981), also by David Black, David W. Shultz, Southwest Research Institute, and Municipal Environmental Research Laboratory. Solid and Hazardous Waste Research Division (page images at HathiTrust)- SHWRD Research Symposium (7th : 1981 : Philadelphia, Pa.): Municipal solid waste, resource recovery : proceedings of the seventh annual research symposium at Philadelphia, Pennsylvania, March 16-18, 1981, by the U.S. EPA Office of Research & Development, Municipal Environmental Research Laboratory, Solid and Hazardous Waste Research Division (Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ;, 1981), also by David Black, David W. Schultz, Southwest Research Institute, Municipal Environmental Research Laboratory. Solid and Hazardous Waste Research Division, and Municipal Environmental Research Laboratory (page images at HathiTrust)
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