Field demonstration its effects on level of knowledge, understanding and attitudes of farmers about choice of a rice variety and use of fertilizers

Field demonstration its effects on level of knowledge, understanding and attitudes of farmers about choice of a rice variety and use of fertilizers

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書誌詳細
第一著者: Villegas, Leopoldo M. 1936-
フォーマット: 学位論文
言語:English
出版事項: 1966.
主題:
Rice research.
Farmers > Philippines > Bulacan.