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    Archive Number
    6511349
    Description
    Black and white aerial photograph of Bwlch, taken by the Ordnance Survey on 21st August 1972 at an altitude of 7700 feet. Grid reference SO1522. Print enlargement (c. 20") taken from 9" film roll.
    Collection Name
    Ordnance Survey Vertical Aerial Photography Collection
    Medium
    Photo.
    Originator
    Ordnance Survey
    Date
    1972-08-21