000 00603nam a2200181Ia 45e0
008 180816s2018 xx 000 0 und d
082 _a372.6
100 _aGupta , Rajhans
245 0 _aProfessional Communications
250 _a1st
260 _bPragati Prakashan , Meerut
942 _2ddc
_cREF
999 _c1311
_d1311