The effect of nitrogen and plant population on corn production and a study of grain maturation period of five corn varieties in Indonesia - Koswara, Jajah, 1941- (Ann Arbor, Mich. : University Microfilms International, 1975)
Thesis (Ph.D.) - University of Wisconsin, 1975
Keywords: Corn -- Ripening -- Indonesia; Corn -- Varieties; Indonesia -- ripening -- corn