@misc{indiciae123e6a987a3a,
  title = {The Midcontinent Strategic and Critical Minerals Project; summary and background information to accompany folio of maps of the northern Midcontinent area, latitude 36-46 degrees N. and longitude 88-100 degrees W.},
  author = {Walden P. Pratt},
  year = {1995},
  doi = {10.3133/cir1124},
  url = {https://pubs.usgs.gov/publication/cir1124},
  note = {Source identifier: cir1124}
}