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By: Illinois. Natural History Survey Division - Brigham, Allison Roeske, - Illinois. Environmental Protection Agency.Edition:Publication info: Urbana, Ill, The Survey, 1979Volume:Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects:BHL Collections:
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By: Singh, Krishan P. - Ramamurthy, Ganapathi S. - Illinois. Environmental Protection Agency.Edition:Publication info: Champaign, Ill, Illinois Institute of Natural Resources, State Water Survey Division, Surface Water Section, 1981Volume: 1Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects:BHL Collections:
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By: Illinois. Environmental Protection Agency.Edition:Publication info: Springfield, Ill, Illinois Environmental Protection Agency,Volume: 1987Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects:BHL Collections: