Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Tools for Installing all Types of Roof Bolts (booklet)
14 pages, printed in black and red. Illustrated throughout, undated.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
14 pages, printed in black and red. Illustrated throughout, undated.