01589nam 2200337Ka 450 991069742960332120080904084029.0(CKB)5470000002388649(OCoLC)244999091(EXLCZ)99547000000238864920080904d2004 ua 0engtxtrdacontentcrdamediacrrdacarrierRelationship of program and classroom characteristics to children's cognitive gains and social development in Head Start[electronic resource] presented at the Society for Research in Child Development Biennial Conference, April 24, 2003 /Nicholas Zill[Washington, D.C.] :[U.S. Dept. of Health and Human Services, Administration on Children, Youth and Families, Research, Demonstration and Evaluation Branch, Head Start Bureau, Westat],[2004?]31 unnumbered pages digital, PDF fileTitle from title screen (viewed on Sept. 3, 2008).Relationship of program and classroom characteristics to children's cognitive gains and social development in Head Start Early childhood educationUnited StatesEarly childhood educationZill Nicholas1385222United States.Head Start Bureau.Westat, Inc.GPOGPOBOOK9910697429603321Relationship of program and classroom characteristics to children's cognitive gains and social development in Head Start3491478UNINA