Use of telephone repeaters with train dispatching and message circuits / by H. A. Affel
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| Superior document: | Bell telephone system B-723 |
|---|---|
| VerfasserIn: | |
| Place / Publishing House: | New York, NY : Bell Telephone Laboratories, 1932 |
| Year of Publication: | 1932 |
| Language: | English |
| Series: | Bell telephone system
B-723 |
| Physical Description: | 14 S.; Ill., graph. Darst.; 23 cm |
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| 245 | 1 | 0 | |a Use of telephone repeaters with train dispatching and message circuits |c by H. A. Affel |
| 264 | 1 | |a New York, NY |b Bell Telephone Laboratories |c 1932 | |
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