Joven, J. E. A. (1998). Developing plant extracts into herbicides. PCARRD Monitor.
Chicago Style (17th ed.) CitationJoven, Joel Eneristo A. "Developing Plant Extracts into Herbicides." PCARRD Monitor 1998.
MLA (9th ed.) CitationJoven, Joel Eneristo A. "Developing Plant Extracts into Herbicides." PCARRD Monitor, 1998.
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