@misc{indiciaebae1868bbc6e,
  title = {Geology of the Tarbela damsite area, Peshawar Division, Pakistan},
  author = {James Alfred Calkins and Mahmooduddin Ahmad},
  year = {1973},
  doi = {10.3133/ofr7339},
  url = {https://pubs.usgs.gov/publication/ofr7339},
  note = {Source identifier: ofr7339}
}