Soil fertility and research the Philippines [microform]. (Quezon City Photoduplication Service, 1977)
No. 3. Soil Survey and land classification of the Penaranda river irrigation system area-- no. 4. Soil survey and land classification of the western Guimba area.
Reproduction of : Vol. ll-Atlas. Rome : Food and Agricultural Organization of the United Nation, 1972. ill.
Keywords: Soil surveys -- Philippines -- Guimba (Nueva Ecija).; Soil surveys -- Philippines -- Penaranda (Nueva Ecija).; Land -- Classifications -- Philippines -- Guimba (Nueva Ecija).; Land -- Classifications -- Philippines -- Penaranda (Nueva Ecija).