British Transport Commission: British Waterways
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Records relating to all divisions
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BTC/BW engineering drawings
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BTC/BW engineering drawings 202-767
BW177/2/6/1/263
Sections of arch bridges on the Grand Union Main Line and Aylesbury Arm
Cross sections showing bridges 79, 110 ans 188 on the main line and 7, 10 and 17 on the arm
1959
BW177/2/6/1/263
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