A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Systems of railway signals and their development. (with discussion.) (3000 w.) (81149 C)
Systems of railway signals and their development. (with discussion.) (3000 w.) (81149 C)
Position-light signals for railroad service
Ill Eng Soc, Trans
Rudd, A.H. (author)
1917
Article (Journal)
English
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