Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Describes this district in Montana where lead, silver, gold and copper deposits have been discovered. (4000 w.) (No. 52335)
Describes this district in Montana where lead, silver, gold and copper deposits have been discovered. (4000 w.) (No. 52335)
New world mining district
Min Sci Pr
Gardner, E.D. (Autor:in)
1914
Ills.
Aufsatz (Zeitschrift)
Englisch
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