EN ISO 11546-1:1995 Acoustics - Determination of Sound Insulation Performances of Enclosures - Part 1: Measurements under Laboratory Conditions (for Declaration Purposes) (ISO 11546-1: 1995)
2009EN ISO 11546-1:2009 Acoustics - Determination of sound insulation performances of enclosures - Part 1: Measurements under laboratory conditions (for declaration purposes)
1995EN ISO 11546-1:1995 Acoustics - Determination of Sound Insulation Performances of Enclosures - Part 1: Measurements under Laboratory Conditions (for Declaration Purposes) (ISO 11546-1: 1995)