Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
British Iron & Steel Research Association, report
3-page report, typed in black ink on cream paper. Pages stapled together. Title: "The British Iron and Steel Research Association Iron Making Division: High Top Pressure - General Summary"
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.