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lake superior mining institute
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Information Prepared for the Seventeenth Annual Meeting of the Lake Superior Mining InstituteAugust 28th, 29th, and 30th, 1912, Held in the Copper Country, with Headquarters at Houghton, Michigan
Arthur L. Carnahan, Lake Superior Mining Institute · Yayınevi bilinmiyor
68 sayfa · 1912
Copper mines and mining
Station Paper
Lake States Forest Experiment Station (Saint Paul, Minn.) · Yayınevi bilinmiyor
356 sayfa · 1949
Forests and forestry