Lopez, A. B. (1977). Nitrogen availability and release from organic matter of some Philippine soils under flooded conditions [microform]. Photoduplication Service. University of the Philippines Library.
Chicago Style (17th ed.) CitationLopez, Amelia B. Nitrogen Availability and Release from Organic Matter of Some Philippine Soils Under Flooded Conditions [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA (9th ed.) CitationLopez, Amelia B. Nitrogen Availability and Release from Organic Matter of Some Philippine Soils Under Flooded Conditions [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Warning: These citations may not always be 100% accurate.