@misc{indiciaee57d71f8ad96,
  title = {Resources for teachers and students at the Upper Midwest Environmental Sciences Center},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2004},
  doi = {10.3133/fs20043058},
  url = {https://pubs.usgs.gov/publication/fs20043058},
  note = {Source identifier: fs20043058}
}