@misc{indiciae2c54662f5d2b,
  title = {Field studies of borehole gamma-ray spectrometer methods for mineral exploration; a selected bibliography},
  author = {Frank E. Senftle},
  year = {1980},
  doi = {10.3133/ofr80503},
  url = {https://pubs.usgs.gov/publication/ofr80503},
  note = {Source identifier: ofr80503}
}