AC Track Circuits on the N&W, 1913

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PDF attached containing article from October 1913 number of Signal Engineer
magazine, by J.A. Beoddy, General Signal Inspector, concerning the status
of AC Track Circuits on the N&W.

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http://www.nwhs.org/mailinglist/2017/20170406.NW_AC%20Track%20Circuits_by%20J.A.%20Beoddy__Signal%20Engineer_vol%206_October%201913.pdf
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