British Transport Commission: British Waterways
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BTC/BW engineering drawings
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BTC/BW engineering drawings 202-767
BW177/2/6/1/224
"Watford District, Tring Section. Proposed concrete piling between Lock No 28 and bridge no 114 Leighton Buzzard"
Plan and sections
12 January 1959
BW177/2/6/1/224
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