NIZAR, RINI, and ANTO ARIYANTO. “KARAKTERISTIK PETANI DALAM PEMANFAATAN PUPUK SUBSIDI DI PROPINSI RIAU”. Jurnal Ilmiah Pertanian 11, no. 1 (August 1, 2013): 25-40. Accessed May 6, 2024. https://journal.unilak.ac.id/index.php/jip/article/view/1311.