Demographic Changes in the United States: The Economic and Social Consequences Into the 21st Century : Hearings Before the Subcommittee on Economic Resources, Competitiveness, and Security Economics of the Joint Economic Committee, Congress of the United States, Ninety-ninth Congress, Second Session, July 25, 29, and 31, 1986
United States. Congress. Joint Economic Committee. Subcommittee on Economic Resources, Competitiveness, and Security Economics
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