The influence of the extension program of the agricultural educational institutions on tobacco farming in Cagayan Valley.

書誌詳細
第一著者:	Balauag, Mariano Pelagio
フォーマット:	学位論文
言語:	English
出版事項:	1979.
主題:	Agricultural extension work > Cagayan Valley. Tobacco farms > Cagayan Valley.