@misc{indiciae1cbf9bcb2476,
  title = {Geophysical techniques for reconnaissance investigations of soils and surficial deposits in mountainous terrain},
  author = {C.G. Olson and J.A. Doolittle},
  year = {1985},
  doi = {10.2136/sssaj1985.03615995004900060032x},
  url = {https://pubs.usgs.gov/publication/70013072},
  note = {Source identifier: 70013072}
}