1. Agricultural practices and water quality

by Willrich, T.L; Smith, G.E. esd. -- Conference the Role of Agriculture in Clean Water Ames, IA (EUA) 18-20 Nov. 1969.

Publisher: Ames, IA (EUA) Iowa State University Press 1970Availability: Copies available for loan: BCO (1). Actions: Add to cart
2. Non-point source management : extension water quality and waste management initiative

by -- North Carolina Agricultural Extension Service, Raleigh, N.C. (EUA)

Publisher: Raleigh, N.C. (EUA) [199?]Availability: Copies available for loan: BCO (2). Actions: Add to cart
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