TY - RPRT TI - Geologic map of the Brockway Quadrangle, McCone County, Montana AU - Roger B. Colton AU - J. P. McGraw AU - S.L. Durst PY - 1994 DO - 10.3133/ofr88623 UR - https://pubs.usgs.gov/publication/ofr88623 ID - ofr88623 ER -