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Title: signalbox diagram [Go to resource]
Description: Signalling diagram, in glazed frame, Shrewsbury, Shropshire & Montgomeryshire Railway, by Tyer & Co, London & Carlisle, 1911. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: diagram Temporal: 1911 Source: Science Museum Creator: Tyer and Co. Identifier: 1997-7900 Go to resource More Like this...
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