@misc{indiciae54b56326d1ca,
  title = {Geologic map of the Millersville Quadrangle, Cape Girardeau and Bollinger counties, Missouri},
  author = {D.H. Amos},
  year = {1982},
  doi = {10.3133/mf1459},
  url = {https://pubs.usgs.gov/publication/mf1459},
  note = {Source identifier: mf1459}
}