@misc{indiciae288c4d7b3efe,
  title = {Examination of selected radioactive samples from Pakistan},
  author = {John J. Matzko and Mamnoon Hasan and Fida Hussain},
  year = {1975},
  doi = {10.3133/ofr75621},
  url = {https://pubs.usgs.gov/publication/ofr75621},
  note = {Source identifier: ofr75621}
}