Some factors affecting ammonification in flooded soils [microform]. - Aspiras, Ruben Baldonado 1939- (Quezon City Photoduplication Service, University of the Philippines Library, 1977)
Microfilmed with 19 other titles.
Thesis (M.S.)--University of the Philippines, Los Banos.
Originally published in 1966.
Keywords: Soils -- Analysis; Plants, Effect of ammonia on