@misc{indiciaee80c4be0b615,
  title = {Digital geologic map of Beaver County, Oklahoma},
  author = {J. R. Cederstrand},
  year = {1997},
  doi = {10.3133/ofr96371},
  url = {https://pubs.usgs.gov/publication/ofr96371},
  note = {Source identifier: ofr96371}
}