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OZONE (12) |
REFRIGERATION (12) |
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OZONE LAYER (10) |
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GLOBAL WARMING (2) |
CLIMATE (1) |
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OZONE (12) |
REFRIGERATION (12) |
OZONE-DEPLETING SUBSTANCES (11) |
OZONE LAYER (10) |
AIR-CONDITIONING (2) |
GLOBAL WARMING (2) |
CLIMATE (1) |
EXPERTS (1) |
FISHERIES (1) |
HYDROCHLOROFLUOROCARBONS (1) |