Soybeans for Iowa
Hughes, H.D., Wilkins, F.S.
Soybeans for Iowa - Ames 1925 - 345-405 p. - Soybeans Iowa Agricultural Experiment Station. Bulletin No. 228 .
Soybeans for Iowa - Ames 1925 - 345-405 p. - Soybeans Iowa Agricultural Experiment Station. Bulletin No. 228 .