TY  - RPRT
TI  - Aeromagnetic map of the western part of the Northern Peninsula, Michigan and part of northern Wisconsin
AU  - Isidore Zietz
AU  - J.R. Kirby
PY  - 1971
DO  - 10.3133/gp750
UR  - https://pubs.usgs.gov/publication/gp750
ID  - gp750
ER  -