000 00357nam a2200133Ia 4500
008 241227s9999 xx 000 0 und d
020 _a9789350144213
082 _a621.382
_bGUP
100 _aGupta, S B.
245 0 _aElectronics and communication engineering
260 _aNew Delhi :
_bS K Kataria,
_c2014
300 _a1096.
650 _aApplied physics
999 _c154833
_d154833