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| 1 | Title: | The iron ores of Lake Superior: containing some facts of interest relating to mining and shipping of the ore and location of principal mines | |
| Creator: | Crowell & Murray | ||
| Publication: | The Penton press, Cleveland,1920. | ||
| Call #: | TN403 M5C9 | ||
| Extent: | 3 p. Á., 9-285, vi p. fold. maps, fold. tab., diagrs. 24 cm. | ||
| Subjects: | Iron ores -- Superior, Lake | Mines and mineral resources -- Superior, Lake | Cleveland imprints 1920 | ||
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