@misc{indiciaee1b4166eb77c,
  title = {Geologic map of the Minersville quadrangle, Schuylkill County, Pennsylvania},
  author = {G.H. Wood and J. P. Trexler and Andy Yelenosky},
  year = {1968},
  doi = {10.3133/gq690},
  url = {https://pubs.usgs.gov/publication/gq690},
  note = {Source identifier: gq690}
}