000 00284nam a2200109Ia 4500
100 _aChild Development; Vol 47 No 3-12
942 _cBK
654 _a
245 _aChild Development; Vol 47 No 3-12
_b1976
260 _aIllinois
_bUniversity of Chicago Press
_c1976
082 _a155.4.05
999 _c353874
_d353874
041 _aeng