The time factor in telephone transmission / by O. B. Blackwell
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| Superior document: | Bell telephone system B-619 |
|---|---|
| VerfasserIn: | |
| Place / Publishing House: | New York, NY : Bell Telephone Laboratories, 1931 |
| Year of Publication: | 1931 |
| Language: | English |
| Series: | Bell telephone system
B-619 |
| Physical Description: | 18 S.; Ill., graph. Darst.; 23 cm |
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