Biography:Johannes Abraham Bierens de Haan

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Short description: Dutch biologist and ethologist
Bierens de Haan (centre, 1951)

Johan(nes) Abraham Bierens de Haan (March 17, 1883 – June 13, 1958) was a Dutch biologist and ethologist.

He was born in Haarlem, and died in Siena, Italy.