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'Cywaith y Comisiwn Coedwigaeth ac ADAS Pwllpeiran yw Mynydd y Ffynnon yng nghanol Mynyddoedd Pumlumon ar flaenau Dyffryn Gwy = A project run by the Forestry Commission and ADAS Pwllpeiran in the heart of the Cambrian Mountains at the top of the Wye Valley'.
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Mynydd y Ffynnon : the source of a new vision for the Welsh uplands = ffynhonnell gweledigaeth newydd ar gyfer ucheldir Cymru. Published by ADAS. Publication and catalogue information, links to buy online and reader comments.