@misc{indiciaeec4e6f1106e7,
  title = {Preliminary isoradioactivity map of the Tordilla Hill-Deweesville area, Karnes County, Texas},
  author = {L.R. Tolozko},
  year = {1961},
  doi = {10.3133/ofr61164},
  url = {https://pubs.usgs.gov/publication/ofr61164},
  note = {Source identifier: ofr61164}
}