TY - JOUR A1 - Piaget, Jean T1 - Explanation of Play JF - Play, Dreams and Imitation in Childhood, New York (Norton & Co) 1961, Chapt. VI, pp. 147-168. Y1 - 1961 N1 - Xeroxcopy ER - TY - JOUR A1 - Piaget, Jean T1 - Comments on Wygotsky's Critical Remarks Concerning >The Language and Thought of the Child< and >Judgement and Reasoning in the Child<. The M. I. T. Press, Massachusetts Institute of Technology, 1962, pp. 1-14. Y1 - 1962 N1 - Special print ER -