Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mining Technology (journal)
December 1979 Vol. 61 No.710. 40 pages stapled in centre. Pages look a bit crumpled including the cover pages.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.