Child's Conception of Number (International Library of Psychology) - Hardcover

Piaget, Jean

 
9780710031426: Child's Conception of Number (International Library of Psychology)

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9780710061942: Child's Conception of Number (International Library of Psychology)

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ISBN 10:  0710061943 ISBN 13:  9780710061942
Verlag: Routledge & Kegan Paul PLC, 1965
Softcover