TY  - GEN
AU  - United Nations Environment Programme
PY  - 2023
UR  - https://wedocs.unep.org/handle/20.500.11822/43105
LA  - English
KW  - emblem
KW  - visual communication
KW  - trademark
KW  - air pollution
KW  - air quality
KW  - brand name
TI  - Visual Identity Brand Guidelines: Version 4 - International Day of Clean Air for Blue Skies
M3  - Communication or other resource
ER  -