000 00328nam a22001337a 4500
005 20210811115752.0
008 210811b ||||| |||| 00| 0 eng d
041 _aeng
100 _aCopper Helfrick
_925031
245 _aElectronic instrumentation & measurements
260 _aN Delhi
_bPHI
_c1988
300 _a466
942 _cBK
999 _c62590
_d62590