Comparative performance of three grain sorghum (Sorghum bicolor L. Moench) cultivars grown under rubber and in the open field as affected by nitrogen level and plant density [microform]. - Gloria, Ricardo Tumanda 1940- (Quezon City Photoduplication Service, University of the Philippines Library, 1977)
Microfilmed with 11 other titles.
Thesis (Ph.D.)--University of the Philippines, Los Banos.
Originally published in [College, Laguna] 1975.
Keywords: Sorghum; Sorghum breeding