000 00526n a2200145ua 4500
040 _aP K Kelkar Library, IIT Kanpur
082 _a155.4
_bOl8
100 _aOlson, David R.
245 0 _aCognitive development
_bthe child's acquisition of diagonality
_cDavid R. Olson
260 _aNew York
_bAcademic Press
_c1970
300 _axvi, 220p
440 _aThe Child Psychology Series : Experimental And Theoretical Analysis Of Child Behaviour / Edited By David S. Palermo
_v
650 _aPsychology
997 _aA42299 C
999 _c462042
_d462042