000 00276nam a2200097Ia 4500
008 200527s9999||||xx |||||||||||||| ||und||
082 _a155.407 2 RES
245 0 _aResearch Relating to Children
264 _bU.S. Department of Health Education and Welfare
_c1961
300 _a132p.
999 _c15363
_d15363