Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Conference on carbon hearths for blast furnaces
Typed in purple ink on off-white paper. Four pages stapled together. Report from a conference on carbon hearths for blast furnaces at London 31/10/46.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.