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Gold dredging near Ruby, Montana
Illustrated description of the improved machinery recently introduced in this field. (1800 w.) (No. 22801)
Gold dredging near Ruby, Montana
Illustrated description of the improved machinery recently introduced in this field. (1800 w.) (No. 22801)
Gold dredging near Ruby, Montana
Eng Min Jour
1911
Article (Journal)
English
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