@misc{indiciae6f4b5ee0c973,
  title = {Construction materials in Phillips County, Kansas},
  author = {Frank E. Byrne and Henry Vorhees Beck and Max S. Houston},
  year = {1948},
  doi = {10.3133/cir21},
  url = {https://pubs.usgs.gov/publication/cir21},
  note = {Source identifier: cir21}
}