00360nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001900084245008200103260002500185300000800210650000800218221030s9999    xx            000 0 und d  a8120314611  aEnglish  a105.23bHel  aA. D. Helfrick 0aModern Electronic Instrumentation & Measurement Techniquescby A. D. Helfrick  bPHIaNew Delhic1998  a446  aECE