Saudi Ambassador to Sudan Faisal bin Hamid Mualla; Cultural and Religious Attaches, Dr. Hazza\'a bin Abdullah Al-Ghamdi and Suleiman bin Rashid Al-Faheed, respectively, attended last night the opening ceremony of the 7th session of Khartoum International Book Fair in which more than 150 Arab and foreign publishing houses are participating. The Fair was opened by the Second Vice President Dr. Al-Hajj Adam Yousuf.