@misc{indiciae5be5ff04792d,
  title = {Generalized geologic and summary geochemical maps of the Rolla 1 degree by 2 degrees Quadrangle, Missouri},
  author = {R. L. Erickson and E. L. Mosier and J.G. Viets},
  year = {1978},
  doi = {10.3133/mf1004a},
  url = {https://pubs.usgs.gov/publication/mf1004A},
  note = {Source identifier: mf1004A}
}