00413nam a2200145Ia 4500008004100000082001600041100002200057245003500079260004600114300000800160650003400168650001800202653002600220700002100246170901s1955    xx            000 0 und d  a544.8bW28S  aWelcher, Frank J. 0aSemimicro Qualitative Analysis  aNew JerseybD. Van Nostrand Companyc1955  a497  aChemistry and allied sciences  aPure Sciences  aQualitative chemistry  aHahn, Richard B.