@misc{indiciae8cda03ec4c9b,
  title = {Geology of the Dera Ismail Khan area, Pakistan},
  author = {William R. Hemphill},
  year = {1973},
  doi = {10.3133/ofr73109},
  url = {https://pubs.usgs.gov/publication/ofr73109},
  note = {Source identifier: ofr73109}
}