Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Trials with Sliding Arches (booklet)
Information Bulletin No. 59/204. 13 pages and a diagram.
Pwnc
Diwydiant
Rhif yr Eitem
2018.42/161
Creu/Cynhyrchu
National Coal Board Production Department
Derbyniad
old stock, 26/1/2018
Mesuriadau
Meithder
(mm): 331
Lled
(mm): 204
Deunydd
Card
Paper
Metal
Dosbarth
roof supportNid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.