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Head Start Impact Study (HSIS), 2002-2008 with Center Analysis File [United States] ... : Version 2 ...
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Head Start Impact Study (HSIS), 2002-2008 with Center Analysis File [United States] ... : Head Start Impact Study (HSIS) ...
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Head Start Impact Study (HSIS), 2002-2008 with Center Analysis File [United States] ... : Archival Version ...
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Third Grade Follow-up to the Head Start Impact Study (HSIS), United States, 2007-2008 ... : Archival Version ...
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Third Grade Follow-up to the Head Start Impact Study (HSIS), United States, 2007-2008 ... : Version 2 ...
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BASE
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Third Grade Follow-up to the Head Start Impact Study (HSIS), 2007-2008, United States ... : Version 1 ...
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