“Physical and Chemical Properties of Cultivated Peat Soils in Four Trial Sites of ICCTF in Kalimantan and Sumatra, Indonesia”. JOURNAL OF TROPICAL SOILS 19, no. 3 (October 1, 2015): 131–141. Accessed March 26, 2026. https://journal.unila.ac.id/index.php/tropicalsoil/article/view/209.