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2. Council directive of 4 May 1976 on pollution caused by certain dangerous substances discharged into the aquatic environment of the Community;Council of the European Communities;Directive 76/464/EEC. Off. J. Europ. Communities,1976
3. National interim primary drinking water regulations;United States Environmental Protection Agency;Fed. Reg.,1975
4. Organic compounds in water — An operational and economic assessment;United Kingdom Water Research Centre,1980
5. Organic substances in potable water and in its precursor. III. The closed-loop stripping procedure compared with rapid liquid extraction;Grob;J. Chromatogr.,1975