Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Installation and Testing of Earth Electrodes (leaflet)
Information Bulletin No. 54/131. 3 pages.
Pwnc
Diwydiant
Rhif yr Eitem
2018.42/110
Creu/Cynhyrchu
National Coal Board Production Department
Derbyniad
old stock, 26/1/2018
Mesuriadau
Meithder
(mm): 331
Lled
(mm): 204
Deunydd
Card
Paper
Metal
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.