@misc{indiciae5c5240b68b44,
  title = {Preliminary surficial geologic maps (1:24,000) showing Quaternary deposits in parts of Union and Snyder Counties, central Pennsylvania},
  author = {Denis E. Marchand},
  year = {1978},
  doi = {10.3133/ofr781025},
  url = {https://pubs.usgs.gov/publication/ofr781025},
  note = {Source identifier: ofr781025}
}