References Magnetophon

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general


barnouw, erik (1968). history of broadcasting in united states ([verschiedene aufl.] ed.). new york: oxford university press. isbn 0-19-500475-2. 
friedrich k. engel, chapter 5: introduction of magnetophon . in daniel, eric d.; et al. (1999). magnetic recording: first 100 years. wiley-ieee.  isbn 0-7803-4709-9














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