Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
British Iron & Steel Research Association, report
Single page, typed in black ink on cream, headed paper. The British Iron and Steel Research Association Iron making Division; summary of report entitled "investigations on an experimental blast furnace." Dated 25/1/51.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.