000 00306nam a2200109Ia 4500
008 211228s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aPiaget, Jean.
245 0 _aMathematical and the Life Sciences
260 _bRouteledge, K.P.
_aLondon
_c1976
942 _c1
999 _c176372
_d176372