Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Technical drawing
Photographic photocopy. Two pages attached with a paperclip. Three technical drawings labelled fig. I, II & III, possibly showing blast furnace components (?).
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.