TY - RPRT TI - Aeromagnetic map of the Sagola quadrangle and part of the Iron Mountain quadrangle, Dickinson, Iron, and Marquette Counties, Michigan AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1967 DO - 10.3133/gp611 UR - https://pubs.usgs.gov/publication/gp611 ID - gp611 ER -