Fishpond cooperators as communication links of improved fishpond practices [microform]

ग्रंथसूची विवरण
मुख्य लेखक: Adan, William R. 1947-
स्वरूप: Visual Material
भाषा:English
प्रकाशित: Quezon City Photoduplication Service. University of the Philippines Library 1980.
विषय: