00377nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001800078100002400096245008600120260001800206650001900224382520261006003731.0120911s9999    xx            000 0 und d  a0135933854  a621.38154 HEL  aHelfrick, Albert D.  aModern electronic instrumentation and measurement techniques / Albert D. Helfrick  aPrentice Hall  aLogic circuits