Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
British Iron & Steel Research Association, report
Three page report, typed in black ink on cream paper plus yellow cover page, stapled in top left corner. The British Iron and Steel Research Association Iron making Division report entitled 'High Top Pressure - General Summary.'
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.