000 00457nam a22001817a 4500
001 31963
003 BD-DhUET
008 150726b xxu||||| |||| 00| 0 eng d
040 _aDLC
_cDLC
_dBD-DhUET
082 _a623.85
_bDAS/1973
100 _aDas, P.N.
245 _aIntroduction to manual telephony
250 _a1st ed.
260 _aCalcutta
_bModern Book Agency
_c1973
300 _aiii, 148p.
_billus
650 0 _aTelephone engineering
942 _cGB
999 _c31963
_d31963