UNE-EN ISO 6468:1997 WATER QUALITY. DETERMINATION OF CERTAIN ORGANOCHLORIDE INSECTICIDES, POLYCHLORINATED BIPHENYLS AND CHLOROBENZENES. GAS CHROMATOGRAPHIC METHOD AFTER LIQUID-LIQUID EXTRACTION (ISO 6468:1996).
1997UNE-EN ISO 6468:1997 WATER QUALITY. DETERMINATION OF CERTAIN ORGANOCHLORIDE INSECTICIDES, POLYCHLORINATED BIPHENYLS AND CHLOROBENZENES. GAS CHROMATOGRAPHIC METHOD AFTER LIQUID-LIQUID EXTRACTION (ISO 6468:1996).