/ Editorial committee: Jerry D. Eastin [and others]
Madison, Wis
: American Society of Agronomy
, 1969.
xx, 396 p., illus., 24 cm
Language: انگلیسی
Proceedings of a symposium sponsored by the University of Nebraska, the American Society of Agronomy, and the Crop Science Society of America, and held at the University of Nebraska, Lincoln, Nebr., January 20-24, 1969