TY  - RPRT
TI  - Preliminary aeromagnetic map (in color) covering most of the exposed Precambrian terrane in Wisconsin
AU  - Isidore Zietz
AU  - John H. Karl
AU  - Meredith Eggers Ostrom
PY  - 1977
DO  - 10.3133/ofr77598
UR  - https://pubs.usgs.gov/publication/ofr77598
ID  - ofr77598
ER  -