Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
East Moors works blast furnace department, notes
Handwritten in pencil on graph paper.Two pages staped together. Analysis of data on blast furnace ores/gases. Dated 17-2-39.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.