| 000 | 00335 a2200145 4500 | ||
|---|---|---|---|
| 080 | _a621.395 BIS | ||
| 082 |
_a621.395 _bBIS |
||
| 100 |
_aBiswas,Nripendra N _92308 |
||
| 245 | _aPrinciples of telephony | ||
| 300 | _a138p. | ||
| 650 |
_atelephony _92309 |
||
| 942 |
_cBK _2ddc |
||
| 260 |
_aNewDelhi _bUBS _c1998 |
||
| 020 | _a81-85273-09-X | ||
| 999 |
_c333574 _d333574 |
||