00964nam 2200169z- 450 9910696838503321(CKB)5470000002382498(EXLCZ)99547000000238249820230503cuuuuuuuu -u- -engMethods of analysis by the U.S. Geological Survey National Water Quality Laboratory : determination of organophosphate pesticides in whole water by continuous liquid-liquid extraction and capillary-column gas chromatography with flame photometric detectiDenver, ColoMethods of analysis by the U.S. Geological Survey National Water Quality Laboratory BOOK9910696838503321Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : determination of organophosphate pesticides in whole water by continuous liquid-liquid extraction and capillary-column gas chromatography with flame photometric detecti3177825UNINA