000 00314nam a2200121Ia 4500
100 _aJean Piaget and Barbel Inheldr
020 _a0-7100-7887-0
942 _cBK
245 _aThe Child's construction of quantities
260 _aRoutledge & Kegan Paul, London
_c1974
082 _a136.72 Pia/Inh
300 _aviii,285p
999 _c4136
_d4136