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Federal
CDC WONDER: Population (from Census)
U.S. Department of Health & Human Services —
The Population online databases contain data from the US Census Bureau. The Census Estimates online database contains county-level population counts for years 1970 -... -
Federal
Head Start Family and Child Experiences Survey (FACES) 2000 Cohort
U.S. Department of Health & Human Services —
Descriptive, longitudinal study including direct assessments, classroom observation, parent and teacher interviews, for a nationally represenative sample of Head...