Soil conservation policies : an assessment : based on material presented at the National Conference on Soil Conservation Policies, November 15-16, 1979, Washington Hilton Hotel, Washington, D.C. /

]]> Ankeny, Iowa : Soil Conservation Society of America, 1979 .
xvi, 154 p. ; , Sponsored by the Soil Conservation Society of America. 23 cm..
093573404X :

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Land use : tough choices in today's world : the proceedings of a national symposium, March 21-24, 1977, in Omaha, Nebraska.

Ankeny, Iowa : Soil Conservation Society of America, 1977 .
x, 454 p. : 23 cm..

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Soil conservation policies : an assessment : based on material presented at the National Conference on Soil Conservation Policies, November 15-16, 1979, Washington Hilton Hotel, Washington, D.C. /

Land use : tough choices in today's world : the proceedings of a national symposium, March 21-24, 1977, in Omaha, Nebraska.