@misc{indiciaea9985fdbc89b, title = {Geology of the Cathedral Bluffs oil-shale area, Rio Blanco and Garfield Counties, Colorado}, author = {J. R. Donnell and W. B. Cashion and James H. Brown}, year = {1953}, doi = {10.3133/om134}, url = {https://pubs.usgs.gov/publication/om134}, note = {Source identifier: om134} }