00441nam a2200145Ia 450000500170000000800460001703700140006304000200007704100130009708400220011010000170013224500510014926000380020049000570023820250508163811.0008  250505s9999    xx            000 0 eng d  aReference  aFEDLbengcFEDL  aeng2eng  a150, VYG/RRqFEDL  aVygotsky L S 0aCollected works of L.S. Vygotsky  Vols.  3 - 6  aNew York, USAbPlenum Pressc1997  vV.3 Problems of the theory and history of psychology