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[Subject: Language]
Translated by: PEZZUOLI CLAUDIO
Translated in 60 languages
[Subject: Mathematics]
Translated by: DAVID LAURENT
Translated in 12 languages
[Subject: Generalities]
Translated in 40 languages
- Ce qu'on ajoute.
Translated in 35 languages
Translated by: GIANNI GAVIOLI
Translated in 20 languages