Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mining Chain (catalogue)
Content summary - catalogue of products manufactured by Wheway Watson Ltd for use with underground conveyors and machine haulage. 38 pages, undated.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.