@misc{indiciae506605d6e5c8,
  title = {Preliminary geologic map of the Ashland NW quadrangle and parts of the Englewood, Profitt Lake and Mount Helen quadrangles, Clark County, Kansas},
  author = {G. M. Fairer and M. W. Green},
  year = {1994},
  doi = {10.3133/ofr94655},
  url = {https://pubs.usgs.gov/publication/ofr94655},
  note = {Source identifier: ofr94655}
}