000 00404nam a2200157Ia 4500
008 170207s9999 xx 000 0 und d
082 _aPG 544 WEL-S
100 _aWelcher, F J; Hahn, Richard B
245 _aSemimicro qualitative analysis
260 _bD Van Nostrand Co. Inc., New Jersey
260 _c1964
300 _a497
365 _bD6.50
650 _aQualitative chemistry
942 _cBOOKS
999 _c7614
_d7614