TY  - BOOK
AU  - Van Hise,Charles Richard
AU  - Leith,C.K.
AU  - Martin,Lawrence
TI  - The geology of the lake Superior region
AV  - QE75 .M7 vol. 52
PY  - 1911///-
CY  - Washington
PB  - Govt. Print. Off.
KW  - Geology
KW  - Superior, Lake
KW  - Iron ores
N1  - Bibliography: p. 73-84
ER  -