Effect of plant spacing and planting date on six varieties of soybeans
By: C.E. Nelson and S. Roberts.
Contributors: Roberts, S. 1930-
Series: Bulletin / Washington Agricultural Experiment Station -- 639.; Bulletin (Washington Agricultural Experiment Station) -- 639.
Publisher: Washington Agricultural Experiment Stations, Institute of Agricultural Sciences, Washington State University
Published: 1962
Place of publication: [Pullman, Wash.]
Language: eng
Subjects: Soybean -- Spacing; Soybean -- Planting time
Notes: Cover title.

Bibliography: p. 9.