@misc{indiciaeab7592d84d94,
  title = {Geological Survey research 1968, Chapter A},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1968},
  doi = {10.3133/pp600a},
  url = {https://pubs.usgs.gov/publication/pp600A},
  note = {Source identifier: pp600A}
}