“Impact of Rainforest Conversion on Surface Runoff and Soil Erosion in Nopu Upper Catchment of Central Sulawesi”. JOURNAL OF TROPICAL SOILS 13, no. 1 (January 1, 2008): 59–65. Accessed November 3, 2025. https://journal.unila.ac.id/index.php/tropicalsoil/article/view/7.