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the year is right...
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in science form the University of Neuchatel.
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was published in the journal de Psychologie.
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his student coworkers, Valentine Chatenay
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date not exact
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he received onr from the sorbanne..,
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became a professor at the sorbanne..
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he created the international center for genetic epistemlolgy.
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he created the school of sciences at the University of Geneva
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