Der mechanisch-akustische Aufbau eines Telephons

Der mechanisch-akustische Aufbau eines Telephons

W. Hahnemann, H. Hecht
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Volume:
365
Year:
1919
Language:
german
Pages:
27
DOI:
10.1002/andp.19193652103
File:
PDF, 1.16 MB
german, 1919
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