000 00259nam a22001097a 4500
082 _a543
_bWEL/STA
100 _aFRANK J. WELCHER
245 _aSTANDARD METHODS OF CHEMICAL ANALYSIS
250 _a6th
260 _bD. VAN NOSTRAND COMPANY
_c1917
942 _2ddc
_cBK
999 _c1553
_d1553