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NA 134-03-03-03 UA
Impact of air pollution on lower plants
NA 134-03-04 AA
Impact of air pollution on material
NA 134-03-07-01 UA
Impact of microbial air pollution on humans
NA 134-03-02 AA
Impact of air pollution on animals
NA 052-00-34-17 AK -dormant
Cleanliness of components of fluid circuits
NA 134-03-05 AA -dormant
Impact of air pollution on soil
NA 134-03-02-02 UA
Impact of air pollution on feral animals "earthworms"
NA 134-03-05-01 UA -dormant
Impact of air pollution on soil
ISO/TC 22/SC 34/WG 17
Road vehicles – Cleanliness of components
CEN/TC 363
Organic contaminants ('tar') in Biomass producer gases