Biological constraints to high yields on some rice farms in Nueva Ecija, Philippines [microform]

Biological constraints to high yields on some rice farms in Nueva Ecija, Philippines [microform]

Bibliographic Details
Main Author: Abilay, Wenceslao P.
Format: Visual Material
Published: Quezon City Photoduplication Service. University of the Philippines Library 1981.
Subjects:
Rice > Philippines > Nueva Ecija.
Rice research > Philippines > Nueva Ecija.