@misc{indiciaecbfe9aa99944,
  title = {Clay investigations in the southern states 1934-35},
  author = {Walter B. Lang and Philip Burke King and M. N. Bramlette and Thomas Newkirk McVay and Harry S. Bay and Arthur Claude Munyan and George Rogers Mansfield},
  year = {1940},
  doi = {10.3133/b901},
  url = {https://pubs.usgs.gov/publication/b901},
  note = {Source identifier: b901}
}