Budi, S. W., & Christina, F. (2013). Coal Waste Powder Amendment and Arbuscular Mycorrhizal Fungi Enhance the Growth of Jabon (Anthocephalus cadamba Miq) Seedling in Ultisol Soil Medium. JOURNAL OF TROPICAL SOILS, 18(1), 59–66. https://doi.org/10.5400/jts.2013.v18i1.59-66