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[Subject: Sound & Related Vibrations]
Translated by: PEZZUOLI CLAUDIO
Translated in 60 languages
[Subject: Relation Of Natural Factors]
Translated by: RUI PEDRO SOARES SEQUEIRA
Translated in 40 languages
[Subject: Generalities]
Translated by: CHERBINO SONIA
Translated in 13 languages
Translated by: INÊS SOARES
Translated in 7 languages
[Subject: General Nature Of Life]
- existir, estar vivo
Translated in 59 languages
Translated by: TZUNG-HSIEN CHEN
Translated in 30 languages