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OZONE LAYER (37) |
OZONE-DEPLETING SUBSTANCES (37) |
OZONE (32) |
REFRIGERATION (15) |
HYDROFLUOROCARBONS (8) |
HYDROCHLOROFLUOROCARBONS (7) |
ENERGY EFFICIENCY (2) |
GLOBAL WARMING (2) |
PACIFIC ISLANDS (TRUST TERRITORY) (2) |
AFRICA (1) |