SyakurS., ZaitunZ., DarusmanD. and SiagianG. M. (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), p. 540. doi: 10.29244/medkon.29.4.540.