@misc{indiciaeb81f0117cd81,
  title = {Generalized geologic map of the Rolla 1° x 2° quadrangle, Missouri and Illinois with emphasis on Precambrian and Cambrian Lamotte Sandstone},
  author = {Walden P. Pratt},
  year = {1978},
  doi = {10.3133/ofr78560},
  url = {https://pubs.usgs.gov/publication/ofr78560},
  note = {Source identifier: ofr78560}
}