Allerton Conference on Agriculture's Role in Environmental Quality (1st : 1970 : Monticello, Ill.) 4n
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Allerton Conference on Agriculture's Role in Environmental Quality (1st : 1970 : Monticello, Ill.) 4n; Agriculture's role in environmental quality : proceedings of the first Allerton conference, December, 1970. : Council on Environmental Quality, University of Illinois at Urbana-Champaign
