Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Drilling for oil, poster
'Shell The Oil Industry Chart 2' information poster showing the process of drilling for oil.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
'Shell The Oil Industry Chart 2' information poster showing the process of drilling for oil.