English AGROVOC
uf
Ozone hole
uf
Ozone layer depletion
RT
Atmosphere
RT
Climate
RT
Climatic change
RT
Environmental degradation
RT
Greenhouse effect
RT
Ultraviolet radiation
(Lao)
ການເຊື່ອມຂອງໂອໂຊນ
(French)
Raréfaction de l'ozone
(Spanish)
Agotamiento del ozono