Toll-telephone question in Finland; development of toll systems in Paris, Finland and elsewhere; quality of telephone traffic; legislation, social aspects and government organization of toll telephone.
Toll-telephone question in Finland
Kaukopuhelinkysymyksemme Nykyinen Tila
Teknillinen Aikakauslehti ; 24 , n 1
1934
11 pages
Article (Journal)
Finnish
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