Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Demag News (periodical)
Demag News: Mining and Metallurgy, volume IV, November 1930. Article entitled 'A New Thomas Steel Works' 12 pages attached with a paperclip. Black print on off-white paper. Article contains several photographs and diagrams.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.