TY  - RPRT
TI  - Aeromagnetic map of the Plains, Perma, Superior, and Tarkio quadrangles, Sanders, Mineral, and Missoula Counties, Montana
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1969
DO  - 10.3133/gp691
UR  - https://pubs.usgs.gov/publication/gp691
ID  - gp691
ER  -