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Arg. Saesneg gwreiddiol = Original English ed.: London: Simon & Schuster Young Books, 1993.
Yn cynnwys mynegai = Includes index.
Addasiad Cymraeg gan = Welsh adaptation by: Ieuan Griffith.
Cyhoeddwyd dan nawdd Cynllun Llyfrau Darllen Cyd-bwyllgof Addysg Cymru = Published under the auspices of the Welsh Joint Education Committee Reading Book Scheme.
Lluniau ar y cloriau tu mewn = Illustrations on inside covers.
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Beth wyddon ni am y Celtiaid? by Hazel Mary Martell. ISBN 1855962942. Published by Gwasg y Dref Wen in 1997. Publication and catalogue information, links to buy online and reader comments.