@misc{indiciae1e94fa2695d0,
  title = {The application of geochemical, botanical, geophysical, and remote sensing mineral prospecting techniques to tropical areas state of the art and needed research},
  author = {John Van N. Dorr and D.B. Hoover and Terry W. Offield and H.T. Shacklette},
  year = {1971},
  doi = {10.3133/ofr7190},
  url = {https://pubs.usgs.gov/publication/ofr7190},
  note = {Source identifier: ofr7190}
}