@misc{indiciae3c5ff3c3c2f8, title = {Preliminary geological map of Elk Ridge 2 NE quadrangle, San Juan county, Utah}, author = {Richard Q. Lewis and Russell H. Campbell}, year = {1957}, doi = {10.3133/70048454}, url = {https://pubs.usgs.gov/publication/70048454}, note = {Source identifier: 70048454} }