@misc{indiciae5970176f4216,
  title = {Geological Survey research 1963; Summary of investigations},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1963},
  doi = {10.3133/pp475a},
  url = {https://pubs.usgs.gov/publication/pp475A},
  note = {Source identifier: pp475A}
}