Hybrid corn in Iowa
Bryan, A.A., Jugenheimer, R.W.
Hybrid corn in Iowa - Ames 1937 - 230-266 p. - Corn Iowa Agricultural Experiment Station. Bulletin No. 366 .
Hybrid corn in Iowa - Ames 1937 - 230-266 p. - Corn Iowa Agricultural Experiment Station. Bulletin No. 366 .