Soil fertility and research the Philippines [microform].

Sonraí bibleagrafaíochta
Formáid:	Visual Material
Teanga:	Béarla
Foilsithe / Cruthaithe:	Quezon City Photoduplication Service University of the Philippines Library, 1977.
Ábhair:	Soil surveys > Philippines > Guimba (Nueva Ecija). Soil surveys > Philippines > Penaranda (Nueva Ecija). Land > Classifications > Philippines > Guimba (Nueva Ecija). Land > Classifications > Philippines > Penaranda (Nueva Ecija).