TY - RPRT TI - General character and succession of tentative divisions in the stratigraphy of the Mineral Hills district, Iron River, Iron County, Michigan AU - C. E. Dutton AU - D.F. Park AU - J. R. Balsley PY - 1945 DO - 10.3133/ofr4566 UR - https://pubs.usgs.gov/publication/ofr4566 ID - ofr4566 ER -