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    Книжкова полиця /Екологія/Save the Planet

    Unit 1. Water Pollution
    Unit 2. Land Pollution
    Unit 3. Air Pollution
    Unit 4. Other Kinds of Pollution
    Unit 5. Global Warming
    Unit 6. Man-Made Environmental Disasters
    Unit 7. Waste Disposal Methods
    Unit 8. Environmental Protection
    References

    Save the Planet