P1073 Testun Cymraeg gyda geirfa Cymraeg/Saesneg ar waelod pob tudalen = Welsh text with Welsh/English vocabulary at foot of each page.
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Gwendolin Pari P.I. by Meleri Wyn James. ISBN 1859029868. Published by Gwasg Gomer in 2001. Publication and catalogue information, links to buy online and reader comments.