Science
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Cyfres a Wyddoch Chi: A Wyddoch Chi am Ddaearyddiaeth Cymru?
£5.9913th February, 2013
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Cyfres a Wyddoch Chi: A Wyddoch Chi am Anifeiliaid Cymru?
£5.9913th February, 2013
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Cyfres Cynefin: 1. Cynefin yr Ardd
£6.9930th April, 2012
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Gold Under Bracken – The Land of Wales
£9.9527th October, 2011
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Farming in Wales 1936-2011 – Welsh Farming and the Farm Business Survey
£9.9513th July, 2011
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100 Facts: Astronomy
£5.991st May, 2011
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Cyfres Dechrau Da: Llosgfynyddoedd
£4.9926th November, 2010
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Cyfres Dechrau Da: Tywydd
£4.9926th November, 2010
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Cyfres Dechrau Da: Lindys ac Ieir Bach yr Haf
£4.9926th November, 2010
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Cyfres Dechrau Da: Cŵn
£4.9926th November, 2010
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Cyfres Dechrau Da: Glan y Môr
£4.9926th November, 2010
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Cyfres Bling: Bywyd Gwyllt Mewn Perygl!
£3.998th June, 2010
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