Correlates of productivity among tobacco farmers of Isabela [microform].

Correlates of productivity among tobacco farmers of Isabela [microform].

書誌詳細
第一著者: Estrada, Robustiano J. 1938-
フォーマット: Visual Material
言語:English
出版事項: Quezon City Photoduplication Service, University of the Philippines Library 1978.
主題:
Farmers > Philippines > Isabela.
Tobacco.