TY - BOOK T1 - The Marquette Range Supergroup in the Gogebic iron district, Michigan and Wisconsin / DA - 1980. CY - Washington : AU - Schmidt, Robert Gordon, VL - 1460 CN - QE75 CN - QE75 PB - U.S. Govt. Print. Off. : for sale by the Supt. of Docs, GPO, PP - Washington : PY - 1980. ID - 229455 KW - Geology, Stratigraphic KW - Iron ores KW - Iron ores KW - Geology KW - Geology TI - The Marquette Range Supergroup in the Gogebic iron district, Michigan and Wisconsin / ER -