Cover image not available
Teitl clawr = Cover title.
"CMK-22-03-211."
"Seremoni dadorchuddio plac gan Ieuan Wyn Jones AC, Dirprwy Brif Weinidog Cymru a'r Gweinidog dros yr Economi a Thrafnidiaeth, 25 Ionawr 2010" - ar y clawr = "Plaque unveiling by Ieuan Wyn Jones AM, Deputy First Minister and Minister for the Economy and Transport, 25 January 2010" - on cover.
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Lledu traffordd yr M4 o gyffordd 29 Cas-bach hyd gyffordd 32 Coryton. ISBN 9780750454353. Published by Llywodraeth Cynulliad Cymru in 2010. Publication and catalogue information, links to buy online and reader comments.