000 00331nam a2200133Ia 4500
999 _c15151
_d15151
008 190711s9999 xx 000 0 und d
020 _a0862492459
082 _a621.382 B621
100 _aBiswas, Nripendra, N.
245 0 _aPrinciples of Telegraphy
260 _aBombay
_bMedia Promoters
_c1993
300 _a24X16
942 _cBK