@misc{indiciaec2c5f27c4fea,
  title = {Geology of the De Queen and Caddo Gap quadrangles, Arkansas},
  author = {Hugh D. Miser and Albert Homer Purdue},
  year = {1929},
  doi = {10.3133/b808},
  url = {https://pubs.usgs.gov/publication/b808},
  note = {Source identifier: b808}
}