HARTATI, WAHJUNI, and TRIYONO SUDARMADJI. “Relationship Between Soil Texture and Soil Organic Matter Content on Mined-Out Lands in Berau, East Kalimantan, Indonesia”. Nusantara Bioscience, vol. 8, no. 1, Sept. 2016, https://doi.org/10.13057/nusbiosci/n080115.