Books by Va.) Forum on Erosion Productivity Impact Estimators (1985 : Alexandria:
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Forum on Erosion Productivity Impact Estimators (1985 : Alexandria, Va.): Assessment and planning staff report : Forum on Erosion Productivity Impact Estimators : [papers and discussions] (United States Dept. of Agriculture, Soil Conservation Service, 1986), also by Klaus F. Alt, James A. Maetzoid, United States. Agricultural Research Service, United States. Department of Agriculture. Economic Research Service, and United States. Soil Conservation Service (page images at HathiTrust)- Forum on Erosion Productivity Impact Estimators (1985 : Alexandria, Va.): Forum on Erosion Productivity Impact Estimators : assessment and planning staff report (U.S. Dept. of Agriculture, Soil Conservation Service, Assessment and Planning, 1986), also by Klaus F. Alt, James A. Maetzold, United States. Agricultural Research Service, United States. Soil Conservation Service, and United States. Dept. of Agriculture. Economic Research Service (page images at HathiTrust)
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