P1042 Yn cynnwys cyfeiriadau llyfryddol = Includes bibliographical references.
P1073 Testun Cymraeg/Saesneg = Welsh/English text tĂȘte-bĂȘche.
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Profiad pobl ifanc o sigarets, alcohol a chyffuriau : arolwg o ddisgyblion ysgolion uwchradd by Alun Waddon. Published by Heddlu Gogledd Cymru in 1997. Publication and catalogue information, links to buy online and reader comments.