Rhif Archif
6489087
Disgrifiad
Gwynedd Archaeological Trust report no 1355, entitled "Holyhead Breakwater. Level 4 Buildng Record" prepared for YGC by Rob Evans and Neil McGuinness, January 2017.
Enw Casgliad
GATP - Gwynedd Archaeological Trust Projects Archive
Cyfrwng
Text, Photo.
Cychwynnwr
Gwynedd Archaeological Trust
Dyddiad
2017-01