Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Crumlin Viaduct, engineering drawing
Engineering drawing for Crumlin Viaduct plan of cross bracing in girder.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Engineering drawing for Crumlin Viaduct plan of cross bracing in girder.