Ambient atmospheres

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JS 1140:2006 Environment-Air quality-Ambient air quality standards this standard determines maximum allowable limits of air pollutants (Published Document (JS))
JS 1140:1999 Pollutants - Ambient air quality standards Specifies the maximum limits of the major pollutants concentrations in ambient air (Withdrawn Document)
JS 1140:1996 Pollutants - Ambient air quality standards Specifies the maximum limits of the major pollutants concentrations in ambient air (Withdrawn Document)