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impulsive noise

dear all,

does anyone have an electronic copy of the following standards ?

ISO 13474:2009
Acoustics - Framework for calculating a distribution of sound exposure levels for impulsive sound events for the purposes of environmental noise assessment

ISO 1999:1990
Acoustics - Determination of occupational noise exposure and estimation of noise-induced hearing impairment

ANSI S3.28-1986
Evaluation Of The Potential Effect On Human Hearing Of Sounds With Peak-a-weighted Sound Pressure Levels Above 120 Decibels And Peak-c-weighted Sound Pressure Levels Below 140 Decibels

The ANSI standard is withdrawn and I don´t know whether it´s superseded by another.

many thanks,

Alex Karandreas