TY  - RPRT
TI  - Regional aeromagnetic map of western Lake Superior and adjacent parts of Minnesota, Michigan, and Wisconsin
AU  - J.R. Kirby
AU  - A. J. Petty
PY  - 1966
DO  - 10.3133/gp556
UR  - https://pubs.usgs.gov/publication/gp556
ID  - gp556
ER  -