LST ISO 1996-1:2004 Acoustics. Description, measurement and assessment of environmental noise. Part 1: Basic quantities and assessment procedures (identical ISO 1996-1:2003)
2005LST ISO 1996-1:2005 Acoustics. Description, measurement and assessment of environmental noise. Part 1: Basic quantities and assessment procedures (identical ISO 1996-1:2003)
2004LST ISO 1996-1:2004 Acoustics. Description, measurement and assessment of environmental noise. Part 1: Basic quantities and assessment procedures (identical ISO 1996-1:2003)