Search Results       Your search for [author]Yogaratham, Ponnampalam, 1939- returned 1 record.           Use of chemicals in lieu of land preparation in flooded rice [microform]. by Yogaratham, Ponnampalam, 1939-; Quezon City: Photoduplication Service University of the Philippines Library, 1974. Subject: Tillage -- Research.          Add to Book Cart Relevance: 31.93%