Abdul Kadir Salam, Galih Susilowati, Nanik Sriyani, and Hery Novpriansyah. “The Residual Cu and Zn in Tropical Soils Two Decades After Amendment With Industrial Waste, Calcite and Cassava-Leaf Compost”. Journal of Environmental & Earth Sciences 7, no. 6 (June 15, 2025): 171–180. Accessed June 14, 2025. https://journals.bilpubgroup.com/index.php/jees/article/view/9211.