@misc{indiciae51d8361cf086,
  title = {Educational materials from the U.S. Geological Survey},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2000},
  doi = {10.3133/fs04400},
  url = {https://pubs.usgs.gov/publication/fs04400},
  note = {Source identifier: fs04400}
}