Analysis of income and resource productivity of alternative rice farm cropping patterns in Bicol [microform]

Dades bibliogràfiques
Autor principal:	Sardido, Moises Lanticse 1936-
Format:	Visual Material
Publicat:	Quezon City Photoduplication Service. University of the Philippines Library 1977.
Matèries:	Agriculture > Economic aspects > Bicol. > Philippines. Cropping systems > Philippines > Bicol.