Classification
UCA - Environmental problems, man and environment - general aspects
UEA - Environmental policy and economy - general aspects
3
UED - Environmental policy
3
LCK - Ecology - general aspects
2
UCJ - Environmental protection - general aspects
2
UCN - Environmental education
2
AHPC - Ethics
1
GPA - Geobiology - general
1
HDG - Psychology, psychiatry
1
HYE - Environmental health
1
LCO - Hydrobiology
1
UHP - Protection of nature and landscape
1
UMV - Climatic change
1
UPK - Water resources, water supply
1
YRC - Technology and society
1