000 00323nam a2200133Ia 4500
020 _a9788120307520
100 _aAlbert D Helfrick
245 _aModern Electronic Instrumentation Measurement Techniques
250 _a1
260 _c2004
_bPHI
_aNew Delhi
300 _axii+446
700 _aWilliam D Cooper
942 _cBK
999 _c30801
_d30801