Books by Ill.) Joint Conference on Recycling Municipal Sludges and Effluents on Land (1973 : Champaign:
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Joint Conference on Recycling Municipal Sludges and Effluents on Land (1973 : Champaign, Ill.): Proceedings of the Joint Conference on Recycling Municipal Sludges and Effluents on Land : July 9-13, 1973, Champaign, Illinois (National Association of State Universities and Land-Grant Colleges, 1973), also by National Association of State Universities and Land-Grant Colleges, United States. Dept. of Agriculture, and United States Environmental Protection Agency (page images at HathiTrust)- Joint Conference on Recycling Municipal Sludges and Effluents on Land (1973 : Champaign, Ill.): Recycling municipal sludges and effluents on land (National Association of State Universities and Land-Grant Colleges, [1973], 1973), also by National Association of State Universities and Land-Grant Colleges, United States Department of Agriculture, and United States Environmental Protection Agency (page images at HathiTrust)
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