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| Authors: / Robert SAMACHER , Author | Authors: / Shuli BARZILAI , Author | Authors: / Katia TERRIOT , Author | 2013 Authors: / Joël BIRMAN , Author | 2012 Authors: / Yves CLOT , Author | Authors: / Marcel BERGERON , Author | Authors: / A. GUILLAIN , Author | Authors: / Emile MONNEROT , Author | Authors: / Jean PIAGET , Author | Authors: / Marcel BERGERON , Author