Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Underground loud speakers; illustrated description of German type of 990-mm diam, built into ground to serve open air audiences for various purposes.
Underground loud speakers; illustrated description of German type of 990-mm diam, built into ground to serve open air audiences for various purposes.
Underground loud speakers
Bodenlautsprecher
Duvigneau, G. (Autor:in)
VDI Zeitschrift ; 82
1938
2 pages
Aufsatz (Zeitschrift)
Deutsch
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| Engineering Index Backfile | 1938
Engineering Index Backfile | 1926
| Engineering Index Backfile | 1930
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