Dutton, Carl E. 1904-1985 Geology of the Florence area, Wisconsin and Michigan / by Carl E. Dutton. -- Washington : United States Government Printing Office, 1971 - 54 p. + map. -- (Geological Survey Professional Paper ; 633). Subjects--Topical Terms: GeologíaMichiganWisconsin Universal Decimal Class. No.: 55(774/775)