@misc{indiciae0f4095bd0a6c,
  title = {Geologic map of the Klingerstown quadrangle, Northumberland, Schuylkill, and Dauphin Counties, Pennsylvania},
  author = {J. Peter Trexler and Gordon H. Wood},
  year = {1968},
  doi = {10.3133/gq700},
  url = {https://pubs.usgs.gov/publication/gq700},
  note = {Source identifier: gq700}
}