Salam, Abdul Kadir, and Kiat Ginanjar. “Tropical Soil Labile Fractions of Copper in the Experimental Plots ±Ten Years After Application of Copper-Containing-Waste”. JOURNAL OF TROPICAL SOILS 23, no. 1 (March 28, 2018): 11–18. Accessed July 27, 2025. https://journal.unila.ac.id/index.php/tropicalsoil/article/view/40.