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100   $a20080904d2004      ua             0
101 0 $aeng
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aRelationship of program and classroom characteristics to children's cognitive gains and social development in Head Start$b[electronic resource] $epresented at the Society for Research in Child Development Biennial Conference, April 24, 2003 /$fNicholas Zill
210  1$a[Washington, D.C.] :$c[U.S. Dept. of Health and Human Services, Administration on Children, Youth and Families, Research, Demonstration and Evaluation Branch, Head Start Bureau, Westat],$d[2004?]
215   $a31 unnumbered pages $cdigital, PDF file
300   $aTitle from title screen (viewed on Sept. 3, 2008).
517   $aRelationship of program and classroom characteristics to children's cognitive gains and social development in Head Start 
606   $aEarly childhood education$zUnited States
615  0$aEarly childhood education
700   $aZill$b Nicholas$01385222
712 02$aUnited States.$bHead Start Bureau.
712 02$aWestat, Inc.
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910697429603321
996   $aRelationship of program and classroom characteristics to children's cognitive gains and social development in Head Start$93491478
997   $aUNINA