@misc{indiciae0be9fd9f0174, title = {Preliminary geologic map of the Black Mountain area northeast of Victorville, San Bernardino County, California}, author = {Paul Stone}, year = {2006}, doi = {10.3133/ofr20061347}, url = {https://pubs.usgs.gov/publication/ofr20061347}, note = {Source identifier: ofr20061347} }