TY  - RPRT
TI  - Airborne electromagnetic and magnetic survey of parts of the Upper Peninsula of Michigan and Northern Wisconsin
AU  - Geoterrex Limited
AU  - William D. Heran
PY  - 1981
DO  - 10.3133/ofr81577a
UR  - https://pubs.usgs.gov/publication/ofr81577A
ID  - ofr81577A
ER  -