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[Subject: Generalities]
Translated by: CHEHAIMI MOHAMAD
Translated in 43 languages
[Subject: Music]
Translated in 22 languages
[Subject: Financial Economics]
Translated in 7 languages
[Subject: Architecture]
Translated by: OMAR DABBOUS
Translated in 86 languages
Translated by: ROUCHDI ABDEL MAJID
Translated in 31 languages
Translated in 3 languages