@misc{indiciae0583db7ae5a9,
  title = {Catalog of selected offices of the Office of Surface Mining, Bureau of Land Management, and Geological Survey relating to coal, 1981},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1980},
  doi = {10.3133/cir840},
  url = {https://pubs.usgs.gov/publication/cir840},
  note = {Source identifier: cir840}
}