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Keywords from Image Description:
cymru wales llyfrgell genedlaethol cymru llyfrgellgenedlaetholcymru national library of wales nationallibraryofwales charles geoff charlesgeoff negydd ffilm negyddffilm film negatives filmnegatives reservoirs men employment Teitl Cymraeg title Argae Claerwen Ffotograffydd Geoff Charles Dyddiad Cyfrwng Negydd ffilm Film negative