Universal soil loss equation : past, present, and future : proceedings of a symposium : the papers were presented during the annual meetings in Los Angeles, California, November 13-18, 1977
sponsored by Division S-6 of the Soil Science Society of America ; organizing committee, Arthur E. Peterson, James B. Swan ; co-editors, Arthur E. Peterson, James B. Swan, coordinating editor, Matthias Stelly, managing editor, David M. Kral, assistant editor, Judith H. Nauseef
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Agronomy in today's society : papers presented at the annual meeting of the American Society of Agronomy in Los Angeles, California, November 13-18, 1977
editor, J.W. Pendleton, editor-in-chief, Matthias Stelly, managing editor, David M. Kral, assistant editor, Judith H. Nauseef
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Crop residue management systems : proceedings of a symposium
sponsored by Divisions C-3, S-3, S-4, and S-6 of of the American Society of Agronomy, the Crop Science Society of America, and the Soil Science Society of America ; editor, W.R. Oschwald ; editor-in-chief, Matthias Stelly ; managing editor, David M. Kral ; assistant editor, Judith H. Nauseef
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