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Credit
Mendel, 1822-1884 : un inconnu célèbre / par Vítězslav Orel ; traduit de l'anglais par Françoise Robert. Correspondance avec Carl Nägeli ; traduite de l'allemand par J.-R Armogathe ; postface, J.-R Armogathe. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.