000 00350nam a2200109Ia 4500
008 200527s9999||||xx |||||||||||||| ||und||
082 _a507 VAI
100 _aNarendera Vaidya
245 0 _aSome aspects of Piagets Work and Science Teaching: A Contribution Towards the Foundations of Science Teaching
264 _bS. Chand and Company
300 _a310p.
999 _c15226
_d15226