British Waterways Board
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Chief Engineer's Department, Watford
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BWB engineering drawings
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BWB engineering drawings nos 769-1004
BW167/6/7/1/25
"Bridge no 176-Grand Union Canal Harefield. Proposed strengthening"
Plans elevations and sections showing new concrete slab to road surface
1963
BW167/6/7/1/25
These records are available immediately for research
1 sheet