Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Equipment at the 1958 Essen Mining Exhibition (booklet)
Information Bulletin No. 59/205. 62 pages, 2 diagrams and an appendix.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Information Bulletin No. 59/205. 62 pages, 2 diagrams and an appendix.