@misc{indiciae05075836076a,
  title = {Geological Survey research 1976},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1976},
  doi = {10.3133/pp1000},
  url = {https://pubs.usgs.gov/publication/pp1000},
  note = {Source identifier: pp1000}
}