00734nam a2200133Ia 4500 171212s9999 xx 000 0 und d 9780833044952 Zellman, Gail L.;Perlman, Michal;Le, Vi-Nhuan;Setodji, Claude Messan Zellman, Gail L.;Perlman, Michal;Le, Vi-Nhuan;Setodji, Claude Messan Assessing the Validity of the Qualistar Early Learning Quality Rating and Improvement System as a Tool for Improving Child-Care Quality RAND Corporation 2008 Child care -- United States -- Evaluation; Child care services -- United States -- Evaluation; Early childhood education -- United States -- Evaluation Economics www.jstor.org/stable/10.7249/mg650qel 351773 351773 0 0 0 CL CL 2017-12-12 0 HQ778.63.A77 2008 2017-12-12 00:00:00 2017-12-12 CBE