000 00315nam a2200121Ia 4500
008 220201s1965 xx 000 0 eng d
082 _a621.3
100 _aChironis, Nichloas P
245 0 _aHandbook of research methods in chils development
260 _bLondon:Mc graw hill
_c1965
300 _a356
942 _2ddc
999 _c75885
_d75885