@misc{indiciaebbe8327bdf1b,
  title = {Mineralogical anomalies and their influences on elemental geochemistry of the main workable coal beds from the Dafang Coalfield, Guizhou, China},
  author = {S. Dai and D. Ren and D. Li and C. L. Chou and K. Luo},
  year = {2006},
  url = {https://pubs.usgs.gov/publication/70030422},
  note = {Source identifier: 70030422}
}