Principles of telephony ; Properties of telephone circuits ; Telephone receivers ; Telephone transmitters ; Telephone apparatus ; ...
著者
書誌事項
Principles of telephony ; Properties of telephone circuits ; Telephone receivers ; Telephone transmitters ; Telephone apparatus ; ...
（International library of technology, 25B）
International Textbook, 1907
- タイトル別名
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Telephone instruments ; Disturbances and transpositions in lines, magneto switchboards
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注記
Includes index