EXCONDE, OFFLIO R. “PHILIPPINE CORN DOWNY MILDEW : ASSESSMENT OF PRESENT KNOWLEDGE AND FUTURE RESEARCH NEEDS”. Agriculture and Natural Resources 10, no. 2 (July 1, 1976): 89–93. accessed September 18, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/240759.