00290nam a2200109Ia 4500008004100000082001300041100002100054245004000075250000900115260003100124650002500155220204s9999    xx            000 0 und d  a543bPEC  aPecsok, Robert L 0aModern methods in chemical analysis  aEd.2  aNew YorkbJohn Wileyc1976  aAnalytical chemistry