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
BW177/2/6/1/252
"Watford District, Brentford Section. Proposed concrete piling between lock no 97 Hnawell and lock no 98 Brentford"
Pln and sections, table showing "Summary Sub-Project no 4"
late 1950s
BW177/2/6/1/252
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