@misc{indiciae8f6c06e109dc,
  title = {Nomenclature and correlation of lithologic subdivisions of the Jefferson and Three Forks Formations of southern Montana and northern Wyoming},
  author = {Charles A. Sandberg},
  year = {1965},
  doi = {10.3133/b1194n},
  url = {https://pubs.usgs.gov/publication/b1194N},
  note = {Source identifier: b1194N}
}