Rhif Archif
6052534
Disgrifiad
Investigator's report concerning Sirior Bach, LLanfair Talhaiarn, comprising descriptive note and plan (scale 1/8in to 1ft).
Enw Casgliad
NMR Site Files
Cyfrwng
Text, Graphic.
Cychwynnwr
Peter Smith
Dyddiad
1971 to 1974