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File:One-Wire Block Telegraph Instrument.png

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Description
English: Fig. 15. One-Wire Block Telegraph Instrument.
Date
Source The Working and Management of an English Railway p. 91
Author not stated
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File:The Working and Management of an English Railway.djvu

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Date/Time Dimensions User Comment
23:26, 4 May 2015 843 × 1,065 (187,456 bytes) s:en:HesperianBot (talk | contribs) {{raw page scan | page = The Working and Management of an English Railway.djvu/105 | source = http://archive.org/details/cu31924032485058}}

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current09:46, 2 August 2015Thumbnail for version as of 09:46, 2 August 2015843 × 1,065 (183 KB)BillinghurstTransferred from en.wikisource: see original upload log above

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