@misc{indiciae1eed972ac939,
  title = {Stratigraphy and paleontology of the Upper Carboniferous rocks of the Kansas section},
  author = {George Irving Adams and George Herbert Girty and David White},
  year = {1903},
  doi = {10.3133/b211},
  url = {https://pubs.usgs.gov/publication/b211},
  note = {Source identifier: b211}
}