TY - RPRT TI - Precambrian basement geologic map of Montana– An interpretation of aeromagnetic anomalies AU - P.K. Sims AU - J.M. O’Neill AU - Viki Bankey AU - E. Anderson PY - 2004 DO - 10.3133/sim2829 UR - https://pubs.usgs.gov/publication/sim2829 ID - sim2829 ER -