@misc{indiciae6df60d6fef3e,
  title = {Bibliography of North American geology, 1970},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1973},
  doi = {10.3133/b1370},
  url = {https://pubs.usgs.gov/publication/b1370},
  note = {Source identifier: b1370}
}