RT Book T1 Review of child development research / Society for Research in Child Development / 6 / Ed. by Willard W. Hartup JF Review of child development research A2 Hartup, Willard W. LA English PP New York PB Russell Sage Foundation YR 1982 UL https://krimdok.uni-tuebingen.de/Record/1087899249 SN 0226318737