Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Application of Powered Monorails at Thoresby Colliery (booklet)
Full title - Application of Powered Monorails at Thoresby Colliery. Major Development Committee: Tunnelling. Information Bulletin No. TG/79/2. 20 page booklet in yellow covers.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.