Wiskandar, Wiskandar, and Ajidirman Ajidirman. 2024. “Effect of Biochar and Tithonia Compost on Physical Properties of Post-Coal Mining Soil”. Journal of Degraded and Mining Lands Management 11 (3). Malang, Indonesia:5829-38. https://doi.org/10.15243/jdmlm.2024.113.5929.