| 000 | 01065 a2200181 4500 | ||
|---|---|---|---|
| 003 | Nust | ||
| 005 | 20221227122156.0 | ||
| 040 | _cNust | ||
| 082 | _a621.385,HER | ||
| 100 |
_aHerbert , Procter _9106027 |
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| 245 |
_aTelephony : _bA Detailed Exposition of the Telephone System of the British post Office / _cProcter Herbert , |
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| 250 | _aVol II | ||
| 260 |
_alondon _bSir Isaac Pitman _c1940 |
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| 300 | _a749p; | ||
| 505 | _aIntroduction (Page-1), Elementary Principles of the Step-by-step System (Page-11), Subscribers Station Apparatus (Page-36), Relays and Mechanisms (Page-85), Power Plant and Common Apparatus (Page-170), Non – Director System (Page-202), Multi – Exchange Areas (page-280), Director System (Page-303), Miscellaneous Circuits (Page-443), Siemens no 16 System (Page-476), Relay System (page-519), Unit Automatic Exchanges (Page-547), Revertive Impulse Systems (Page-583), Recent Developments in Swathing Systems (Page-612), Trunking and Grading (Page-560), Maintence (Page-684). | ||
| 650 |
_aTelephony _9106028 |
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| 942 |
_2ddc _cBK |
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| 999 |
_c195020 _d195020 |
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