George, Nangu, KillurRajashekhar Rao Bangadi, and CornelioDavid Lopez. 2013. “Land Use Conversion and Soil Properties in a Lowland Tropical Landscape of Papua New Guinea”. Jurnal Manajemen Hutan Tropika 19 (1). Bogor, INA, 39-45. https://doi.org/10.7226/jtfm.19.1.39-45.