P1042 Yn cynnwys cyfeiriadau llyfryddol = Includes bibliographical references.
P1073 Testun Cymraeg/Saesneg tête-bêche = Welsh/English text tête-bêche.
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Tyfu'n coetiroedd yng Nghymru : her y 100,000 hectar by John Osmond. ISBN 9781904773634. Published by Sefydliad Materion Cymreig in 2012. Publication and catalogue information, links to buy online and reader comments.