Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Post Office technical pamphlet for workmen
Blue cover with black print. Technical pamphlet - " Subscribers' Apparatus C.B.S. Part 1 C.B.S. No. 1 System. 31 pages.
Pwnc
Diwydiant
Rhif yr Eitem
91.34I/14
Creu/Cynhyrchu
Post Office Engineering Department
Dyddiad: 1938
Derbyniad
Collected officially, 10/9/1991
Mesuriadau
Meithder
(mm): 182
Lled
(mm): 124
Deunydd
papur
metel
Lleoliad
In store
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