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Archival descriptionDinorwic Hydro Electric Scheme: Llanberis Exhibition, June 1972
Dinorwic Hydro Electric Scheme: Llanberis Exhibition, June 1972
North Wales Hydro-Electric Power Bill: Caernarfonshire
North Wales Hydro-Electric Power Bill: Caernarfonshire
North Wales Hydro-Electric Power Bill, 1973
North Wales Hydro-Electric Power Bill, 1973