Acoustics; measurement of sound insulation in buildings and of building elements; part 2: determination, verification and application of precision data (ISO 140-2:1991); German version EN 20140-2:1993
German title
Akustik; Messung der Schalldämmung in Gebäuden und von Bauteilen; Teil 2: Angaben von Genauigkeitsanforderungen (ISO 140-2:1991); Deutsche Fassung EN 20140-2:1993
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