Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
National Coal Board, report
N.C.B. reports for the year 1971 relating to East and West Wales Areas, opencast coal mining and market demand for coal. 13 pages, stapled.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.