TY - RPRT TI - Preliminary geologic map of upper zones of the western end of the Stillwater Complex, Park and Sweetgrass counties, Montana AU - Kenneth K. Segerstrom AU - Robert R. Carlson PY - 1977 DO - 10.3133/ofr77370 UR - https://pubs.usgs.gov/publication/ofr77370 ID - ofr77370 ER -