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999 _c340965
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040 _aKE-NaHC
_beng
_cKE-NaHC
_dKE-NaHC
100 _aPiaget, Jean
_913776
245 1 4 _aThe child's conception of the world
_cJean Piaget
260 _aNew York
_bHumanities Press
_c1951
440 _aInternational library of psychology philosophy & scientific method
_911078
650 _aPiaget Jean 1896
_x1980
_aChild study
_aReasoning (Psychology)
_945588
942 _hBF
_i723
_m.R4.PIA
_cBK