Classification
UMV - Climatic change
12
UMB - Atmospheric chemistry
4
GUA - Geography - general
3
GUAB - Geography - anthropological
3
AHK - Scientific work
2
AHP - Philosophy
2
GRAD - Earth atmosphere, weather
2
GRB - Climatology
2
GRBA - Climatology - general
2
GRBN - Climatological models
2
YRB - Social sciences, sociology
2
EXA - Energy policy
1
GMAD - Organic geochemistry
1
GSC - Remote sensing
1
GUAC - Geography - cartography
1
MWHL - Modeling, classification, clustering
1
UAM - Environmental models
1
UCA - Environmental problems, man and environment - general aspects
1
UED - Environmental policy
1
UMA - Atmospheric sciences
1
UMC - Atmospheric physics
1
UMD - Atmospheric models
1
UML - Air pollution by special sources
1
YPB - Economy - general aspects
1
YZA - Politics, political science
1