Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Design of Mine Layouts (report)
National Coal Board Mining Department
(publisher)
'Design of Mine Layout with reference to geological and geometrical factors'. Working Party Report 1972. 52 pages in blue covers.
Pwnc
Diwydiant
Rhif yr Eitem
2018.164/17
Creu/Cynhyrchu
Derbyniad
old stock, 9/8/2018
Mesuriadau
Meithder
(mm): 297
Lled
(mm): 210
Deunydd
papur
cerdyn
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.