The geology of the lake Superior region.
Van Hise, Charles Richard, 1857-1918.
The geology of the lake Superior region. - Washington, Govt. Print. Off., 1911- - 641 p.
Bibliography: p. 73-84.
gs 11000568
Geology--Superior, Lake.
Iron ores--Superior, Lake.
QE75 / .M7 vol. 52
I 19.9:52
The geology of the lake Superior region. - Washington, Govt. Print. Off., 1911- - 641 p.
Bibliography: p. 73-84.
gs 11000568
Geology--Superior, Lake.
Iron ores--Superior, Lake.
QE75 / .M7 vol. 52
I 19.9:52