00452nam a22001457i 4500001001000000005001700010008004100027082001800068100003800086245007200124260004900196300001700245650002600262020001800288SXC01128020260819093514.0260101s1968    ii            000 0 eng d  a544 WEL-S222  aWelcher, Frank J; Hahn, Richard B10aSemimicro qualitative analysis /cWelcher, Frank J; Hahn, Richard B  abD Van Nostrand Co. Inc., New Jersey,c1968  ap. ;c22 cm. 0aQualitative chemistry  a9780471001928