Telephony & telegraphy A : an introduction to telephone and telegraph instruments and exchanges /
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| 主要作者: | |
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| 格式: | 图书 |
| 语言: | English |
| 出版: |
London :
Oxford U.P,
1969.
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| 主题: |
| Item Description: | Third ed. published in 1978 under title: Telephony and telegraphy. |
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| 实物描述: | xv, 285 p. : illus ; 25 cm. |
| 参考书目: | Bibliography: p. [263]. |
| ISBN: | 0198593058 : |