Nitrogen availability and release from organic matter of some Philippine soils under flooded conditions [microform] - Lopez, Amelia B. 1931- (Quezon City Photoduplication Service. University of the Philippines Library, 1977)
Microfilmed with 19 other titles.
Microfilm of a typescript.
Thesis (M.S.)--University of the Philippines, Los Banos.
Originally published in Laguna, 1957.
Keywords: Nitrogen; Soils -- Philippines