00398nam a2200145Ia 4500008004100000020001500041041001200056082001100068100001900079245009600098260002500194300000800219650000800227700001700235221030s9999    xx            000 0 und d  a8120307520  aEnglish  a105.23  aA. D. Helfrick 0aModern Electronic Instrumentation & Measurement Techniquescby A. D. Helfrick, W. D. Cooper  bPHIaNew Delhic2009  a445  aECE  aW. D. Cooper