A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Railway signal lanterns
Experiments on the visibility of signal lights with various arrangements of reflectors. (3000 w.)
Railway signal lanterns
Experiments on the visibility of signal lights with various arrangements of reflectors. (3000 w.)
Railway signal lanterns
Lanternes de Signaux pour Chemins de Fer
1897
Article (Journal)
French
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