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[Subject: Geometry]
Translated by: FARHAD PEZESHKI
Translated in 24 languages
[Subject: Generalities]
Translated by: CHEHAIMI MOHAMAD
Translated in 23 languages
[Subject: Mathematics]
Translated by: OMAR DABBOUS
Translated in 21 languages
[Subject: Sociology]
Translated in 18 languages
[Subject: Economics]
Translated in 29 languages