Suwarna, Ujang, Harnios Arief, and Mohammad Ramadhon. 1. “Erosi Tanah Akibat Operasi Pemanenan Hutan (Soil Erosion Caused by Forest Harvesting Operations)”. Jurnal Manajemen Hutan Tropika 15 (2). Bogor, INA, 61-65. https://jurnal.ipb.ac.id/index.php/jmht/article/view/3240.