1977

The Child's representation of the world : [proceedings of the annual conference of the Developmental Section of the British Psychological Society held at the University of Surrey, England, September 1

British Psychological Society. Developmental Section. Conference (University of Surrey) : (1976)

New York : Plenum Press, [1977]

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1978

Children's thinking : what develops?

Carnegie Symposium on Cognition (13th : 1977)

Hillsdale, N.J. : L. Erlbaum Associates ; New York : distributed by Halsted Press Division of Wiley, 1978

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1983

Children's counting types : philosophy, theory, and application

New York : Praeger, 1983

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