Nitrogen availability in five soils under different management systems and its effects on growth and yield of rice [microform] - Briones, Angelina Mariano 1939- (Quezon City Photoduplication Service,University of the Philippines library, 1976)
Microfilmed with 7 other titles
Thesis (M.S.)--University of the Philippines, Los Banos.
Originally published in 1966.
Keywords: Soils -- Analysis; Nitrogen; Rice