00588nam a2200121Ia 4500 171212s9999 xx 000 0 und d 9780833025302 Karoly, Lynn A.;Greenwood, Peter W.;Everingham, Susan S.;Hoube, Jill;Kilburn, M. Rebecca Karoly, Lynn A.;Greenwood, Peter W.;Everingham, Susan S.;Hoube, Jill;Kilburn, M. Rebecca Investing in Our Children What We Know and Don't Know About the Costs and Benefits of Early Childhood Interventions RAND Corporation 1998 Education www.jstor.org/stable/10.7249/mr898tcwf 352239 352239 0 0 0 CL CL 2017-12-12 0 2017-12-12 00:00:00 2017-12-12 CBE