Timing of nitrogen application on lowland rice vareities differing in growth duration [microform] - Obias, Raymundo O. 1971- (Quezon City Photoduplication Services,University of the Philippines Library, 1975)
Microfilmed with 8 other titles
Thesis (M.S.)--University of the Philippines, Los Banos.
Originally published in 1967.
Keywords: Rice; Nitrogen fertilizers