TY - RPRT TI - Quaternary geologic map of the Shelby 1° x 2° quadrangle, Montana AU - David S. Fullerton AU - Roger B. Colton AU - Charles A. Bush PY - 2013 DO - 10.3133/ofr20121170 UR - https://pubs.usgs.gov/publication/ofr20121170 ID - ofr20121170 ER -