TY - RPRT TI - Aerial gamma-ray survey in the northern part of the Boulder Batholith, Jefferson County, Montana AU - Joseph S. Duval AU - James A. Pitkin AU - David L. Macke PY - 1978 DO - 10.3133/ofr78180 UR - https://pubs.usgs.gov/publication/ofr78180 ID - ofr78180 ER -