Yovi, Efi Yuliati, and Widya Prajawati. 2015. “High Risk Posture on Motor-Manual Short Wood Logging System in Acacia Mangium Plantation”. Jurnal Manajemen Hutan Tropika 21 (1). Bogor, INA, 11-18. https://doi.org/10.7226/jtfm.21.1.11.