Moving up the yield curve : advances and obstacles : proceedings of a symposium
· sponsored by Divisions S-4, S-8, and A-4 of the American Society of Agronomy and the Soil Science Society of America ; organizing committee Lloyd Hossner, Robert Hoeft ; editorial committee Larry S. Murphy, Eugene C. Doll, L. Fred Welch ; editor-in-chief Matthias Stelly ; managing editor David M. Kral ; assistant editor Mary P. Wirtz
Bok Engelsk 1980