@misc{indiciae6f80a23fb354,
  title = {Comparison of thickness, grade, and depth of radioactive layers as determined by gamma-ray logging and by core sampling},
  author = {Carl M. Bunker},
  year = {1959},
  doi = {10.3133/tei612},
  url = {https://pubs.usgs.gov/publication/tei612},
  note = {Source identifier: tei612}
}