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
BW177/2/6/1/131
"Propose piling with 8'6" concrete piles, south of Lock no 22 Fenny Stratford, Tring Sect. Watford Dist."
Site plan and cross sections
1957
BW177/2/6/1/131
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1 sheet