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Rescuing 2 sources and tagging 0 as dead.) #IABot (v2.0.8 |
Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.8 |
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Baris 52:
* [http://www.siam.co.uk/srs/ Signalling Record Society] {{Webarchive|url=https://web.archive.org/web/20070301141914/http://www.siam.co.uk/srs/ |date=2007-03-01 }}
* [http://www.carreweb.fr/signalisation_en.html French Signalling]
* [http://www.european-railway-signalling-server.net/ The European Railway Signalling Server] {{Webarchive|url=https://web.archive.org/web/20081119084441/http://www.european-railway-signalling-server.net/ |date=2008-11-19 }}
* [http://www.irse.org/ The Institution of Railway Signal Engineers]
* [http://www.du.edu/~jcalvert/railway/railhom.htm#hist The Origin of the Railway Semaphore]
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