@misc{indiciaec8e566a8d477,
  title = {GIS representation of coal-bearing areas in Antarctica},
  author = {Matthew D. Merrill},
  year = {2016},
  doi = {10.3133/ofr20161031},
  url = {https://pubs.usgs.gov/publication/ofr20161031},
  note = {Source identifier: ofr20161031}
}