@misc{indiciae40cfc9d5fca6,
  title = {Geology of anthracite in the western part of the Shamokin quadrangle, Northumberland County, Pennsylvania},
  author = {Harold H. Arndt and Walter Danilchik and Gordon H. Wood},
  year = {1963},
  doi = {10.3133/coal47},
  url = {https://pubs.usgs.gov/publication/coal47},
  note = {Source identifier: coal47}
}