Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Graph, extra steel costs when varying alloys added
Graph printed in black ink on cream paper. Full title: 'Graph showing varying cost to be added to one ton of steel for varying percentages of alloy additions'. Graph produced by the Technical Department of High Speed Steel Alloys Ltd.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.