@misc{indiciaea7dc89029e8f,
  title = {Geologic construction-material resources in Sheridan County, Kansas},
  author = {Henry Vorhees Beck and Robert K. McCormack},
  year = {1951},
  doi = {10.3133/cir118},
  url = {https://pubs.usgs.gov/publication/cir118},
  note = {Source identifier: cir118}
}