@misc{indiciae59b0960a507e,
  title = {Generalized geologic and geochemical maps of the Cambrian Bonneterre Formation, Rolla 1 degree by 2 degrees Quadrangle, Missouri},
  author = {R. L. Erickson},
  year = {1979},
  doi = {10.3133/mf1004b},
  url = {https://pubs.usgs.gov/publication/mf1004B},
  note = {Source identifier: mf1004B}
}