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Figure 2. Global Emissions under Business as Usual and with a 20% Cut in OECD Emissions

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Figure 3. Costs of 20% Cut in OECD Emissions by 2010- Case 1

(costs through 2050 discounted to 1990 at 5%)

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Figure 5. Regional Costs under Four Alternative Cases (costs through 2050 discounted to 1990 at 5%)

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Trillions of dollars

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Billion tons of C

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Figure 6. Global Emissions and CO2 Concentrations with and without Intertemporal Efficiency (based on average of model results)

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