Sources and rates od fertilizer phosphorus for flooded rice in Buenavista clay [microform]

ग्रंथसूची विवरण
मुख्य लेखक: Duangputra, Piya 1939-
स्वरूप: Visual Material
प्रकाशित: Quezon City Photoduplication Service. University of the Philippines Library 1977.
विषय: