Influence of internal drainage on the chemical and electrochemical changes of four flooded soils and on the growth of rice [microform]. - Krutkun, Tawin 1937- (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: Drainage; Soils -- Analysis; Rice