@misc{indiciae8fb1315ed190,
  title = {Geologic map of the Pottsville quadrangle, Schuylkill County, Pennsylvania},
  author = {Gordon H. Wood},
  year = {1973},
  doi = {10.3133/gq1028},
  url = {https://pubs.usgs.gov/publication/gq1028},
  note = {Source identifier: gq1028}
}