@misc{indiciae59e46a474a05,
  title = {Location of geologic field projects, Geologic Division, as of March 1, 1962},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1962},
  doi = {10.3133/ofr6251},
  url = {https://pubs.usgs.gov/publication/ofr6251},
  note = {Source identifier: ofr6251}
}