The child's conception of number.

Piaget, Jean,

The child's conception of number. [Translated by C. Gattegno and F. M. Hodgson] - London Routledge & Paul [1964] - ix, 248 p. 22 cm.

52004983 //r882


Child psychology
Number concept.

BF723.N8 / P53

136.745101
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