• Cymraeg
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    Archive Number
    6441599
    Description
    Final maps from a geophysical survey of Cwm Ffrydlas and Mynydd Du carried out by Sam Birchall, 2015.
    Collection Record
    General Digital Donations Collection
    Medium
    108MB. Cartographic.
    Originator
    Sam Birchall
    Date
    2015-04