sponsored by Divisions C-3, C-6, A-4, and S-4 of the American Society of Agronomy, Crop Science Society of America and the Soil Science Society of America ; editor-in-chief, Matthias Stelly
a 1972 symposium sponsored by the Crop Science Society of America, held in Miami Beach, Florida. editor, Arthur G. Matches. Editor in chief, R.W. Howell. Managing editor: D.A. Fuccillo. Assistant editor: Laura H. Paskin