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TGCH : technoleg gwybodaeth a chyfathrebu
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TGCH : technoleg gwybodaeth a chyfathrebu

Sean O'Byrne

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Yn cynnwys mynegai = Includes index.
Cyhoeddwyd yn wreiddiol yn Saesneg = Originally published in English : London : Letts Educational, 2001.

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TGCH : technoleg gwybodaeth a chyfathrebu by Sean O'Byrne. ISBN 9781855966130. Published by Gwasg y Dref Wen in 2008. Publication and catalogue information, links to buy online and reader comments.

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