Autore:Lucien Lévy-Bruhl
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- ↑ Base Léonore
- ↑ 2,0 2,1 Brockhaus Enzyklopädie
- ↑ Bibliothèque nationale de France
- ↑ Hrvatska enciklopedija
- ↑ 5,0 5,1 annuaire prosopographique: la France savante
- ↑ Grande Enciclopedia Sovietica 1969–1978
- ↑ data.bnf.fr
- ↑ Encyclopædia Britannica