@misc{indiciae9fd2d57ccbae,
  title = {Geologic map of the Sedgewickville quadrangle, Bollinger and Perry counties, Missouri},
  author = {D.H. Amos},
  year = {1984},
  doi = {10.3133/mf1674},
  url = {https://pubs.usgs.gov/publication/mf1674},
  note = {Source identifier: mf1674}
}