A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Communication describing and illustrating a device used in Denver with great satisfaction and economy. (600 w.)
Communication describing and illustrating a device used in Denver with great satisfaction and economy. (600 w.)
Safety switches
St Ry Jour
Beeler, John A. (author)
1896
Article (Journal)
English
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Types construction and application of safety switches
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