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1
Annotated bibliography on soil erosion and erosion control in subarctic and high-latitude regions of North America
Portland, Or. : U.S. Dept of Agriculture, Forest Service, Pacific Northwest Research Station, 1989Format: Government Document Book
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2
A search for environmental ethics : an initial bibliography
Washington, D.C. : Smithsonian Institution Press, 1980Format: Government Document Book
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3
Conservation tillage, January 1980-August 1985 : citations from Agricola concerning diseases and other environmental considerations
Beltsville, Md. : Washington, D.C. : U.S. Dept. of Agriculture, National Agricultural Library ; U.S. Environmental Protection Agency, Office of Pesticide Programs, 1986Format: Government Document Book