Search Results       Your search for [author]Villegas, Leopoldo M., 1936- returned 1 record.           Field demonstration : its effects on level of knowledge, understanding and attitudes of farmers about choice of a rice variety and use of fertilizers. by Villegas, Leopoldo M., 1936-; 1966. Subject: Rice research; Farmers -- Philippines -- Bulacan.          Add to Book Cart Relevance: 21.15%