@misc{indiciae55484f2fc4f0,
  title = {USGS compilation of geographic information system (GIS) data of coal mines and coal-bearing areas in Mongolia},
  author = {Michael H. Trippi and Harvey E. Belkin},
  year = {2015},
  doi = {10.3133/ofr20151144},
  url = {https://pubs.usgs.gov/publication/ofr20151144},
  note = {Source identifier: ofr20151144}
}