TY - RPRT TI - Geologic map of the east flank of the Elkhorn Mountains, Broadwater County, Montana AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1968 DO - 10.3133/ofr68303 UR - https://pubs.usgs.gov/publication/ofr68303 ID - ofr68303 ER -