Castillo, E. H. (1980). Effects of organic and inorganic fertilizers on corn performance and on some soil properties [microform].
Chicago Style (17th ed.) CitationCastillo, Edgardo H. Effects of Organic and Inorganic Fertilizers on Corn Performance and on Some Soil Properties [microform]. Quezon City :Photoduplication Service. University of the Philippines Library, 1980.
MLA (9th ed.) CitationCastillo, Edgardo H. Effects of Organic and Inorganic Fertilizers on Corn Performance and on Some Soil Properties [microform]. 1980.
Warning: These citations may not always be 100% accurate.