Designing optimal voice networks for businesses, government, and telephone companies /
| Main Author: | |
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| Other Authors: | , , |
| Format: | Book |
| Language: | English |
| Published: |
Chicago, Ill. :
Telephony Pub. Corp.,
[1980]
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| Subjects: |
| Item Description: | Includes index. |
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| Physical Description: | 325 pages : illustrations ; 28 cm. |