@misc{indiciae301a1852e098,
  title = {Chart showing correlation of selected key units in the organic-rich sequence of the Green River Formation, Piceance Creek basin, Colorado, and Uinta Basin, Utah},
  author = {W. B. Cashion and John R. Donnell},
  year = {1972},
  doi = {10.3133/oc65},
  url = {https://pubs.usgs.gov/publication/oc65},
  note = {Source identifier: oc65}
}