Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Underground haulage by diesel and storage battery locomotive (booklet)
National Coal Board (Mining) Codes and Rules. 75 page booklet in green covers. Also includes seven pages of amendments.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.