Fahmi, Arifin Fahmi, Bostang Radjagukguk, Benito Heru Purwanto, and Eko Hanudin Hanudin. “The Influnece of Peat Layer on Hidrogen and Aluminium Concentration Originating from the Substratum Sulphidic Materials”. JOURNAL OF TROPICAL SOILS 17, no. 3 (January 25, 2013): 197–202. Accessed July 27, 2025. https://journal.unila.ac.id/index.php/tropicalsoil/article/view/152.