@misc{indiciae086c505cccc5, title = {Logs of holes drilled in 1955 and 1956 by U.S. Geological Survey, Dry Creek Basin area, Bull Canyon district, Montrose and San Miguel Counties, Colorado}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1967}, doi = {10.3133/ofr67257}, url = {https://pubs.usgs.gov/publication/ofr67257}, note = {Source identifier: ofr67257} }