Rhif Archif
6439075
Disgrifiad
River Twrch Aqueduct and weir, Ystalyfera; photo survey comprising 9 b/w prints. Negatives held.
Enw Casgliad
NMR Site Files
Cyfrwng
9 prints. Photo.
Cychwynnwr
RCAHMW
Dyddiad
1970 to 1990