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_aTK6397 _b.T34 1979 |
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| 100 | 1 |
_aTalley, David. _99886 |
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| 245 | 1 | 0 |
_aBasic telephone switching systems / _cDavid Talley. |
| 250 | _a2d ed. | ||
| 260 |
_aRochelle Park, N.J. : _bHayden Book Co. ; _bD. B. Taraporevala Sons and Co., _cc1980. |
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| 300 |
_a166 p. : _bill. ; _c25 cm. |
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| 500 | _aIncludes index. | ||
| 500 | _aPrinted in India. | ||
| 650 | 0 |
_aTelephone systems. _98875 |
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_aTelephone, Automatic. _99887 |
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