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Air Pollution, Trees and crop injury, new types of forest damages in central europe, concept of forest decline in relation to western U.S. Forests, forest decline syndromes in the southeastern united states,
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decline of red spruce in the high-elevation forests of the northeastern united states, assessment of crop losses from air pollutants in the united states, economic measures of the impacts of air pollution on health and visibility,
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policies to reduce damages to forests and crops
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