Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
A Plough Arrestor for a Gleithobel (booklet)
Internal Report No. 72/7. 15 page booklet with additional 3 pages of original photographs. Blue covers with plastic binding.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.