Zaitun, Zaitun, Syakur Syakur, Darusman Darusman, and SiagianGolda Meilani. 2024. “Improving the Physical Properties of Ex-Coal Mining Soil Planted With Sweet Corn (Zea Mays Saccharata L.) Using Pine Wood and Sawdust Biochar ”. Media Konservasi 29 (4). https://journal.ipb.ac.id/index.php/konservasi/article/view/55488.