Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Schaefer concrete arch supports for mine roofs
Method of supporting roofs as used at Powderly mine of Hudson Coal Co., at Carbondale, Pa.
Schaefer concrete arch supports for mine roofs
Method of supporting roofs as used at Powderly mine of Hudson Coal Co., at Carbondale, Pa.
Schaefer concrete arch supports for mine roofs
Eng. Min. Jl
Robie, E.H. (Autor:in)
1931
2 pages
5 Figs.
Aufsatz (Zeitschrift)
Englisch
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