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Understanding children's development
Peter K. Smith and Helen Cowie
Bok Språk ikke angitt 1988
Children's play : research developments and practical applications
edited by Peter K. Smith
Bok Engelsk 1986
Play in animals and humans
edited by Peter K. Smith
Bok Språk ikke angitt 1984
The ecology of preschool behaviour
Peter K. Smith and Kevin J. Connolly
Bok Engelsk 1980