@misc{indiciae8fd038b34b55,
  title = {Geologic map of the Gordonville Quadrangle, Cape Girardeau County, Missouri},
  author = {D.H. Amos},
  year = {1985},
  doi = {10.3133/mf1823},
  url = {https://pubs.usgs.gov/publication/mf1823},
  note = {Source identifier: mf1823}
}