| 000 | 00367nam a2200121Ia 4500 | ||
|---|---|---|---|
| 100 | _aP S Das | ||
| 250 | _a5th ed | ||
| 942 | _cBK | ||
| 245 | _aAn introduction to Manual Telephony : for the undergraduate students of Tele-Communication and Electrical Engineering | ||
| 260 |
_aModern Book Agency, Calcutta _c1987 |
||
| 082 | _a651.262 Das | ||
| 300 | _ax,153,iii.p figs | ||
| 999 |
_c66173 _d66173 |
||