[1]
Anggara, F. et al. 2020. Preliminary Study of Rare Earth Element and Yttrium (REY) Content of Coal In Sangatta Coalfield, East Kalimantan, Indonesia. Indonesian Journal on Geoscience. 7, 3 (Nov. 2020), 305–314. DOI:https://doi.org/10.17014/ijog.7.3.305-314.