000 00298nam a2200109Ia 4500
008 250502b |||||||| |||| 00| 0 eng d
041 _aeng
245 _aChild Development; Vol 51 No 1-4
_bMar-Dec 1980
260 _aIllinois
_bUniversity of Chicago Press
_c1980
942 _cBK
999 _c409970
_d409970