@misc{indiciae72ee6be5eba4,
  title = {Earth science in the public service},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1974},
  doi = {10.3133/pp921},
  url = {https://pubs.usgs.gov/publication/pp921},
  note = {Source identifier: pp921}
}