@misc{indiciaee8d288b5ea1c,
  title = {Geologic map of exposed Precambrian rocks, Rolla 1 degree by 2 degrees Quadrangle, Missouri},
  author = {W. P. Pratt and R.E. Anderson and A.W. Berry and M. E. Bickford and E. B. Kisvarsanyi and J.R. Sides},
  year = {1979},
  doi = {10.3133/i1161},
  url = {https://pubs.usgs.gov/publication/i1161},
  note = {Source identifier: i1161}
}