Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Paper on the economics of blast furnace practice
Typed in black ink on off-white paper. 23 pages attached with a paperclip. Full title :"Preparation of R.W. Materials and some Economics of Blast Furnace Operation"
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.