00454nam a2200157 a 4500001001400000003000400014008004100018020001500059050002500074100001900099245006500118260004200183300001700225650002400242700003000266vtls000005710MTX970814c1991    sina          001   eng d  a997151098700aQD96.A2.S56bW5 19911 aWillett, John.10aGas Chromatography : Analytical chemistry /cJohn E. Willett  aSingapore :bJohn Wiley & Sons,c1991  a253 p :bill 0aGas Chromatography.  aKealey, David,cjt. auth.