TY  - RPRT
TI  - Aeromagnetic map of the Keweenaw Bay area, Michigan
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1967
DO  - 10.3133/gp608
UR  - https://pubs.usgs.gov/publication/gp608
ID  - gp608
ER  -