@misc{indiciae08cfe9961980,
  title = {Geological Survey research 1971, Chapter A},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1971},
  doi = {10.3133/pp750a},
  url = {https://pubs.usgs.gov/publication/pp750A},
  note = {Source identifier: pp750A}
}