Predicting tillage effects on soil physical properties and processes : proceedings of a symposium
· sponsored by Divisions A-3, S-6, and S-1 of the American Society of Agronomy and the Soil Science Society of America ; organizing committee D.M. Van Doren ... [et al.] ; editorial committee P.W. Unger co-editor, D.M. Van Doren, Jr. co-editor ... [et al.] ; managing editor, David M. Kral ; assistant editor, Sherri Hawkins
Bok Engelsk 1982