Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mining Technology (journal)
December 1981 Vol. 63 No.734. 40 pages stapled in centre. Front two pages top right hand corners bent over.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.