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[Subject: Sciences Of Earth & Worlds]
Translated by: SERGIO CRAGNOLINI
Translated in 186 languages
[Subject: Physics]
Translated in 68 languages
Translated in 18 languages
[Subject: Military Art & Science]
Translated in 15 languages
[Subject: Automotive]
Translated in 13 languages
[Subject: Social Sciences]
Translated in 10 languages