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040 _beng
040 _cIN-NITTTR
041 _aeng
082 _a302.4833 S91C
100 _aShukla, Rajiv
245 0 _aCommunication technologies :
_b changes and challenges /
_cShukla, Rajiv
942 _2ddc
_cBK
999 _c28196
_d28196