Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Zinc in Blast Furnace Practice (report)
Typed in black ink on white paper. Report entitled 'Zinc in Blast Furnace Practice'. Dated 19th February 1958.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.