@misc{indiciaebc01a9608245,
  title = {Stratigraphic sections of lower Tertiary strata and charts showing palynomorph and mollusk assemblages, Douglas Creek Arch area, Colorado and Utah},
  author = {R. C. Johnson and D. J. Nichols and J.H. Hanley},
  year = {1988},
  doi = {10.3133/mf1997},
  url = {https://pubs.usgs.gov/publication/mf1997},
  note = {Source identifier: mf1997}
}