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Pourquoi le fer du sang n’est pas attiré par un aimant ? - Couleur science
February 2, 2015 at 5:32:49 PM GMT+1 ·
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http://couleur-science.eu/?d=2015/01/31/22/13/51-pourquoi-le-fer-du-sang-nest-pas-attire-par-un-aimant
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