Effects of organic and inorganic fertilizers on corn performance and on some soil properties [microform]

Bibliographic Details
Main Author:	Castillo, Edgardo H. 1946-
Format:	Visual Material
Language:	English
Published:	Quezon City :Photoduplication Service. University of the Philippines Library 1980.
Subjects:	Fertlizers and manures > Research. > Philippines. Corn > Fertilizers and manures. > Philippines.