Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Post Office Engineering Dept. (booklet)
Booklet - 23 pages ; 22 black & white photographs Content summary:- Construction and maintenance of P.O. lines and exchanges.
Pwnc
Diwydiant
Rhif yr Eitem
91.47I
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.