TY  - RPRT
TI  - Aeromagnetic map of parts of the Ralph and Norway quadrangles, Dickinson County, Michigan
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1967
DO  - 10.3133/gp610
UR  - https://pubs.usgs.gov/publication/gp610
ID  - gp610
ER  -