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[Subject: Generalities]
Translated by: MARCO PRADELLI
Translated in 37 languages
[Subject: Chile]
Translated in 27 languages
[Subject: Customs Of Life Cycle & Domestic Life]
Translated by: ALESSANDRO ZIGNANI
Translated in 18 languages
[Subject: Physics]
Translated by: GUEST USER
Translated by: SYLVIA VERGARA
Translated in 6 languages