003450000a22001210004500060000800000082001800008100002800026245005700054260003100111260000900142300000800151650006400159  a100  a543.089 6 GUD  aGudzinowicz, Benjamin J  aGas chromatographic analysis of drugs and pesticides  aNewyork, Marul dekker, Inc  c1967  a605  aChromatography-gas/gas-liquid chromatography/chromatography