TY - RPRT TI - Keweenawan geology of the North Ironwood, Ironwood, and Little Girl Point quadrangles, Gogebic County, Michigan AU - Harold Arthur Hubbard PY - 1975 DO - 10.3133/ofr75152 UR - https://pubs.usgs.gov/publication/ofr75152 ID - ofr75152 ER -