TY  - RPRT
TI  - Preliminary report and geologic map of the Mountain Pass district, San Bernardino County, California
AU  - Jerry Chipman Olson
PY  - 1952
DO  - 10.3133/ofr52109
UR  - https://pubs.usgs.gov/publication/ofr52109
ID  - ofr52109
ER  -