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Illustrated detailed description of the standard methods of development. (3000 w.) (No. 3672 C)
Illustrated detailed description of the standard methods of development. (3000 w.) (No. 3672 C)
Pocahontas region mining methods
Mines Min
Stoek, H.H. (Autor:in)
1909
Aufsatz (Zeitschrift)
Englisch
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