@misc{indiciae0edb6f472766,
  title = {Geological Survey research 1969, Chapter A},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/pp650a},
  url = {https://pubs.usgs.gov/publication/pp650A},
  note = {Source identifier: pp650A}
}