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Cilt sonuçları
Mineral Resources of Michigan with Statistical Tables of Production and Value of Mineral Products for 1915 and Prior Years
Richard A. Smith, Rolland Craten Allen · Yayınevi bilinmiyor
444 sayfa · 1916
Mines and mineral resources
A Revision of the Sequence and Structure of the Pre-Keweenawan Formations of the Eastern Gogebic Iron Range of Michigan
Rolland Craten Allen, L. P. Barrett, Charles Kenneth Leith · Yayınevi bilinmiyor
41 sayfa · 1916*
Geology
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