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005 20260205054312.0
008 260111s9999||||xx |||||||||||||| ||und||
082 _a621.38 G239C
100 _aGautam, A K
245 0 _aCommunication system
260 _aDelhi
_bS.K.Kataria
_c2000
300 _a224p.
942 _cBK
999 _c136239
_d136239