00401nam a2200145Ia 4500008004100000082001300041100002200054245004200076250000600118260004600124300000800170650003400178650001800212653002500230170901s1966    xx            000 0 und d  a543bS67  aWelcher, Frank J. 0aStandard Methods of Chemical Analysis  a6  aNew JerseybD. Van Nostrand Companyc1966  a974  aChemistry and allied sciences  aPure Sciences  aAnalytical chemistry