Sources and rates od fertilizer phosphorus for flooded rice in Buenavista clay [microform] - Duangputra, Piya 1939- (Quezon City Photoduplication Service. University of the Philippines Library, 1977)
Microfilmed with 18 other titles.
Thesis (M.S.)
Originally published in Los Banos, Laguna, 1968.
Keywords: Phosphorus as fertilizers; Soils -- Phosphorus content; Rice -- Fertilizers and manures