000 00335nam a2200133Ia 4500
008 220201s2020 xx 000 0 eng d
082 _a621.382 MAN
100 _aManoj Kumar
245 0 _aPrinciples of communication engineering
250 _a6th
260 _aNew Delhi
_bSatya Prakashan
_c2019
300 _a10 chap
942 _2ddc
999 _c30027
_d30027