TY  - RPRT
TI  - Aeromagnetic map of Gladstone and vicinity, Delta, Alger, Menominee, and Marquette counties, Michigan
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1972
DO  - 10.3133/gp833
UR  - https://pubs.usgs.gov/publication/gp833
ID  - gp833
ER  -