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2. and , The Psychology of the Child, New York: Basic Books, 1969.
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4. MILTA [a group intelligence test—grades 4-12 (divided into three levels), two versions] Jerusalem: The School of Education of the Hebrew University of Jerusalem and The Ministry of Education and Culture, 1966.
5. “Comments on Vygotsky's critical remarks,” in Thought and Language, Cambridge: MIT Press and J. Wiley, 1962.