@misc{indiciae824613db68a7,
  title = {Geology of anthracite in the eastern part of the Ashland quadrangle, Pennsylvania},
  author = {Boyd Raymond Haley and H. H. Arndt and H. E. Rothrock and H. C. Wagner},
  year = {1954},
  doi = {10.3133/coal14},
  url = {https://pubs.usgs.gov/publication/coal14},
  note = {Source identifier: coal14}
}