000 00300nam a2200145Ia 4500
100 _aVygotsky, L. S.
020 _a81-8274-146-7
365 _b750
942 _cBK
654 _a
245 _aEducational psychology
260 _aU.S.A.
_bCRC Press
_c2006
082 _a370.15
300 _axl,374
999 _c415482
_d415482
041 _aeng