Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Summaries of Technical Articles (list)
Document created by the National Coal Board's Production Department summarising the content of articles published in various technical publications. Document dated 23 June 1964. One sheet, folded and printed on both sides.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.