Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Evolution of the All-Carbon Blast Furnace (article)
50 pages attached with a split pin. Typed in black ink on off-white paper. Title: 'The Evolution of the All-Carbon Blast Furnace'. Dated September, 1949.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.