title: Persistent organic chemicals in sewage effluents. 3. Determinations of nonylphenoxy carboxylic acids by high-resolution gas chromatography/mass spectrometry and high-performance liquid chromatography.
authors.forename: M
authors.initials: M
authors.lastname: Ahel
authors.forename: T
authors.initials: T
authors.lastname: Conrad
authors.forename: W
authors.initials: W
authors.lastname: Giger