@misc{indiciaeb3e1b4fc067e,
  title = {Geographic information system (GIS) representation of coal-bearing areas in India and Bangladesh},
  author = {Michael H. Trippi and Susan J. Tewalt},
  year = {2011},
  doi = {10.3133/ofr20111296},
  url = {https://pubs.usgs.gov/publication/ofr20111296},
  note = {Source identifier: ofr20111296}
}