English AGROVOC
BT
Pollutants
RT
Air pollution
RT
Carbon dioxide
RT
Climatic change
RT
Greenhouse effect
RT
Methane
RT
Nitrogen oxides
(Lao)
ອາຍເຮືອນແກ້ວ
(French)
Gaz à effet de serre
(Spanish)
Gases de efecto invernadero