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[Subject: Geometry]
Translated by: KEVIN FLYNN
Translated in 127 languages
[Subject: Athletic & Outdoor Sports & Games]
Translated by: MIRJAM BRÜCKNER
Translated in 68 languages
[Subject: Electricity & Electronics]
Translated in 13 languages
Translated by: SYLVIA VERGARA
[Subject: Generalities]
Translated by: DAVID LAURENT
Translated in 11 languages
[Subject: Literature (Belle-Lettres)]
Translated in 8 languages
[Subject: Light & Paraphotic Phenomena]
Translated in 4 languages