00344nam a2200133Ia 4500008004100000020000500041082002000046100001600066245003900082260003800121300000800159650001900167650002400186140316s9999    xx            000 0 und d  a  a621.381bSTE/EL  aSteve Money  aElectronic test equipment handbook  aNew DelhibBPB Publicationsc1991  a206  aDigital meters  aMeasuring frequency