NA 134

VDI/DIN-Commission on Air Pollution Prevention (KRdL) - Standards Committee

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Drafts of NA 134

Number: 12

DIN EN ISO 21877 2018-05 Stationary source emissions - Determination of the mass concentration of ammonia - Manual method (ISO/DIS 21877:2018); German and English version prEN ISO 21877:2018 More 
DIN ISO 19926-1 2017-09 Meteorology - Weather radar - Part 1: System performance and operation (ISO/DIS 19926-1:2017); Text in German and English More 

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