United States Department of Agriculture, Soil Conservation Service ; in cooperation with United States Department of Agriculture, Forest Service and Research Division of the College of Agricultural and Life Science, University of Wisconsin
United States Department of Agriculture, Soil Conservation Service ; in cooperation with the Research Division of the College of Agricultural and Life Sciences, University of Wisconsin
United States Department of Agriculture, Soil Conservation Service ; in cooperation with United States Department of Agriculture, Forest Service, and the Research Division of the College of Agricultural and Life Sciences, University of Wisconsin
sponsored by Divisions S-1, S-2, and A-5 of the American Society of Agronomy and the Soil Science Society of America in Atlanta, Georgia, 29 Nov. - 3 Dec. 1981 ; editorial committee, D.W. Nelson, D.E. Elrick, K.K. Tanji
United States Department of Agriculture, Soil Conservation Service ; in cooperation with the Research Division of the College of Agricultural and Life Sciences, University of Wisconsin
United States Department of Agriculture, Soil Conservation Service ; in cooperation with the Research Division of the College of Agricultural and Life Sciences, University of Wisconsin
United States Department of Agriculture, Soil Conservation Service ; in cooperation with the Research Division of the College of Agricultural and Life Sciences, University of Wisconsin