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Your query returned 5 studies. Series results are grouped under the most relevant study. Ungroup series results to view all results.

The 1915 Iowa State Census Project (ICPSR 28501)
Goldin, Claudia; Katz, Lawrence
County Characteristics, 2000-2007 [United States] (ICPSR 20660)
Inter-university Consortium for Political and Social Research
Current Population Survey: Annual Social and Economic (ASEC) Supplement Survey, 2006 (ICPSR 4559)
United States Department of Commerce. Bureau of the Census; United States Department of Labor. Bureau of Labor Statistics

more results 1 more result in Current Population Survey Series

National Assessment of Educational Progress [United States], 1970-1980 (ICPSR 8072)
Education Commission of the States

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