@misc{indiciae6a275a3144e6,
  title = {USGS Global Change Research},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1993},
  doi = {10.3133/ofr93647},
  url = {https://pubs.usgs.gov/publication/ofr93647},
  note = {Source identifier: ofr93647}
}