Syakur, Syakur, Zaitun Zaitun, Darusman Darusman, and Golda Meilani Siagian. 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): 540. https://doi.org/10.29244/medkon.29.4.540.