Council on Environmental Quality
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This sourcebook contains 367 graphics, most of which are computer generated and indicate current conditions and trends in the environment of the United States. The statistical series for Environmental Trends was compiled from data available through government agencies, private studies, or the literature of each discipline. The data were reviewed and verified by experts at various federal agencies. National data are used wherever possible, with breakdowns shown when especially meaningful. The text is drawn from the published sources cited.