Mabbayad, B. B. (1977). Tillage techniques and planting methods for lowland rice [microform]. Photoduplication Service. University of the Philippines Library.
Παραπομπή σε μορφή Chicago (17η εκδ.)Mabbayad, Basilio B. Tillage Techniques and Planting Methods for Lowland Rice [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Παραπομπή σε μορφή MLA (9th εκδ.)Mabbayad, Basilio B. Tillage Techniques and Planting Methods for Lowland Rice [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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