@misc{indiciae5d6dc85b9d5c,
  title = {Preliminary geologic map, oil shale yield histograms and stratigraphic sections, Long Point quadrangle, Garfield County, Colorado},
  author = {R. C. Johnson},
  year = {1975},
  doi = {10.3133/mf688},
  url = {https://pubs.usgs.gov/publication/mf688},
  note = {Source identifier: mf688}
}