Production and Control of Ozone Abstract T .... Ozone levels recorded during the Antarctic springtime (September November) were about 40 percent lower than they had been in the 1960s (Mathews, 1991, 122). .... (2045 8 )
OZONE LAYER DEPLETION AND ITS EFFECTS .... measurements as anomalies far beyond the error range of existing predictive model (3:122). .... T. p. 34; 12 / 1991. 3. Mathews, JT Preserving The Global Environment .... (1836 7 )
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