Long term productivity benefits of soil conservationWalker, D.J. and Young, D.L. and Fosbert, M.A. and Busacca, A.J. and Saxton, K.E. and Carter, D.L. and Frazier, B.E. (1987) Long term productivity benefits of soil conservation. In: STEEP--Conservation Concepts and Accomplishments. Washington State University Publication, Pullman, WA. pp. 9-39.
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