Changes in the Process of Aging During the Twentieth Century: Findings and Procedures of the Early Indicators Project
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The program project Early Indicators of Later Work Levels, Disease and Death investigates how socioeconomic and environmental factors in early life can shape health and work levels in later life. Project researchers have approached this problem by creating a life-cycle sample that permits a
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美国国家经济研究局创建时间：
2003-09-01
