| 000 | 00333nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 210219s9999||||xx |||||||||||||| ||und|| | ||
| 082 |
_a621.385 _bB623P |
||
| 100 | _aBiswas N N | ||
| 245 | 0 |
_aPrinciples of telegraphy _cBiswas N N |
|
| 260 |
_aBombay _bMedia Promoter _c1986 |
||
| 300 | _ax,185 | ||
| 942 | _cBK | ||
| 950 | _o621.385 B623P | ||
| 999 |
_c1853 _d1853 |
||