The effect of potassium fertilization and cropping on the exchangeable and soil solution potassium - Merestela, Tessie M. 1953- (1979)
Mimeographed.
Thesis (M.S.)--University of the Philippines, Los Banos.
Vita.
Keywords: Potassium fertilizers -- Philippines; Cropping systems -- Philippines; Soils -- Potassium content. -- Philippines