000 00321nam a2200121Ia 4500
008 180413s9999 xx 000 0 und d
100 _aFurth Hans G
245 0 _aPiaget And Knowledge Theoretical Foundation
260 _bEngelwood : Prentice-Hall 1969.
300 _a270
546 _aEng
690 _aPiaget ; Knowkedge.
999 _c16116
_d16116