Jonkman1
Harrie Jonkman is senior researcher and his interest is on the social and cognitive development of children and youngsters.
Hjonkman@verwey-jonker.nl
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Harrie Jonkman is senior researcher and his interest is on the social and cognitive development of children and youngsters.
Hjonkman@verwey-jonker.nl
Jonkman1 doesn’t have any following yet.