Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Dry Dust Suppression and Percussive Drilling (booklet)
National Coal Board Production Department
(publisher)
Information Bulletin No. 55/144. 12 pages and a table.
Pwnc
Diwydiant
Rhif yr Eitem
2018.42/118
Creu/Cynhyrchu
Derbyniad
old stock, 26/1/2018
Mesuriadau
Meithder
(mm): 331
Lled
(mm): 204
Deunydd
cerdyn
papur
metel
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.