Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Post Office Green Paper
Post Office Green Paper No.43 - "Long-Distance Telephony". 42 pages with black and white diagrams and Long-Distance Telephony appendices at the back.
Pwnc
Diwydiant
Rhif yr Eitem
91.46I/30
Derbyniad
Collected officially, 11/9/1991
Mesuriadau
Meithder
(mm): 244
Lled
(mm): 184
Deunydd
papur
metel
Lleoliad
In store
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