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"Handbook on the use of telephones" von books.google.com
... Handbook on the use of telephones , 1976 . 7 On CICERO and CADE , see Lockwood and Cooper , 1980 ; Baath and Månsson , 1977. Also see 4.6 . 8 Wilmersdoerfer , 1978 . 9 Bååth , 1979c , p 29. See further Bååth 95 Communication in Distance ...
"Handbook on the use of telephones" von books.google.com
... J ( 1977 ) Individualisiertes und soziales Lernen in Medienverbundsystemen . ZIFF - Papiere 13. Hagen : Fernuniversität . Handbook on the Use of Telephones ( 1976 ) Milton Keynes : The Open University . Harden , R M , Dunn , W R , 168.