German standard methods for the examination of water, waste water and sludge; substance group analysis (group F); determination of benzene and some of its derivatives by gas chromatography (F 9)
German title
Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung; Gemeinsam erfaßbare Stoffgruppen (Gruppe F); Bestimmung von Benzol und einigen Derivaten mittels Gaschromatographie (F 9)
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