Disposal of Environmentally Damaging Fluids .... CFMs), then used in the United States as both a refrigerant (freon) and as a propellant for commercial products (Van Norstrand's, 1984, 2127). .... (1286 5 )
Production and Control of Ozone Abstract T .... Introduction The ozone (O3) layer refers to the layer within Earth's upper atmosphere lying between 50,000 to 120,000 feet (Ozone layer, 1984, 2127). .... (2045 8 )
OZONE LAYER DEPLETION AND ITS EFFECTS .... a 5 percent depletion is not expected until about the year 2000 (10:2127). .... 10. Van Norstrand's Scientific Encyclopedia.New York, Van Norstrand Reinhold.1984. (1836 7 )
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