Classification
UMK - Air pollution - general aspects
3
UMB - Atmospheric chemistry
2
GRAD - Earth atmosphere, weather
1
GRAK - Atmospheric precipitations
1
GRBN - Climatological models
1
UMC - Atmospheric physics
1
UME - Clean air
1
UMG - Technology of clean air
1
UML - Air pollution by special sources
1
UMN - Air pollution control and measurement
1
UMRC - Effects of air pollution on plants and animals
1