TY  - BOOK
AU  - Winchell,N.H.
AU  - Winchell,Horace V.
TI  - The iron ores of Minnesota: their geology, discovery, development, qualities, and origin, and comparison with those of other iron districts 
T2  - Bulletin / Geological and Natural History Survey of Minnesota
AV  - QE127 .A22 no. 6
PY  - 1891///
CY  - Minneapolis
PB  - Harrison & Smith, state printers
KW  - Iron ores
KW  - Minnesota
KW  - Iron mines and mining
KW  - History
KW  - Bibliography
N1  - Maps and plan in pockets; "Bibliography of the origin of iron ores": p. [258]-334
ER  -