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020 _a8122407889
082 _a621.3812
_bKUM
100 _aVirendra Kumar
245 0 _aDigital Technology Principles and Practice
250 _a*
260 _aKALCUTTA
_bNew Age
_c2002
300 _aXV;674
500 _aQuantity Number: 4
650 _aElectronics
942 _cBK
999 _c8530
_d8530