@misc{indiciae898ba4d549ff,
  title = {Stratigraphic cross sections M-M' through R-R', showing electric logs of upper Cretaceous and older rocks, Powder River Basin, Wyoming},
  author = {J. E. Fox},
  year = {1993},
  doi = {10.3133/oc137},
  url = {https://pubs.usgs.gov/publication/oc137},
  note = {Source identifier: oc137}
}