Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mobil Industrial Review (journal)
Spring 1958, Volume 2 Number 2 (Reprinted February 1966). 20 page journal with colour diagrams and black and white photographs. Stapled at centre. Articles on how iron ore is converted to iron, how steel is made etc.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.