@misc{indiciae7f60c2bca589,
  title = {Uranium, potassium, and thorium contour maps derived from a helicopter gamma-ray spectrometer survey of the Getchell Trend, Humboldt County, Nevada},
  author = {Inc. with an introduction by Pitkin Prepared by TerraSense and P. L. Hill},
  year = {1989},
  doi = {10.3133/ofr89287},
  url = {https://pubs.usgs.gov/publication/ofr89287},
  note = {Source identifier: ofr89287}
}