Oro, R. S. (1977). Penetration and infection of corn by Duccinia polysora underwent [microform]. Photoduplication Service. University of the Philippines Library.
Chicago Style (17th ed.) CitationOro, Rosalinda Santiago. Penetration and Infection of Corn by Duccinia Polysora Underwent [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA (9th ed.) CitationOro, Rosalinda Santiago. Penetration and Infection of Corn by Duccinia Polysora Underwent [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Warning: These citations may not always be 100% accurate.