The iron ores of Minnesota : their geology, discovery, development, qualities, and origin, and comparison with those of other iron districts /
Winchell, N. H. 1839-1914.
The iron ores of Minnesota : their geology, discovery, development, qualities, and origin, and comparison with those of other iron districts / by N.H. Winchell and H.V. Winchell. - Minneapolis : Harrison & Smith, state printers, 1891. - ix, 430 p., 41, [1] leaves of plates : ill., maps ; 24 cm. - Bulletin / Geological and Natural History Survey of Minnesota ; no. 6 . - Bulletin (Geological and Natural History Survey of Minnesota) ; no. 6. .
Maps and plan in pockets.
"Bibliography of the origin of iron ores": p. [258]-334.
gs 06000023
Iron ores--Minnesota.
Iron mines and mining--History.--Minnesota
Iron ores--Bibliography.
QE127 / .A22 no. 6
The iron ores of Minnesota : their geology, discovery, development, qualities, and origin, and comparison with those of other iron districts / by N.H. Winchell and H.V. Winchell. - Minneapolis : Harrison & Smith, state printers, 1891. - ix, 430 p., 41, [1] leaves of plates : ill., maps ; 24 cm. - Bulletin / Geological and Natural History Survey of Minnesota ; no. 6 . - Bulletin (Geological and Natural History Survey of Minnesota) ; no. 6. .
Maps and plan in pockets.
"Bibliography of the origin of iron ores": p. [258]-334.
gs 06000023
Iron ores--Minnesota.
Iron mines and mining--History.--Minnesota
Iron ores--Bibliography.
QE127 / .A22 no. 6