Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Post Office lecture notes
Post Office Lecture notes, typed manuscript : "Telegraphy Wire and Wireless"
Pwnc
Diwydiant
Rhif yr Eitem
91.48I/4
Historical Associations
Associated Person/Body: General Post Office
Association Type: Company name
Dyddiad: 1937
Derbyniad
collected officially, 1991
Deunydd
papur
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.