'Umar ibn al-Khaṭṭāb.
Publisher: Dār al-Fikr al-'Arabī
Published: 1969
Place of publication: Al-Qāhirah
Language: ara
Number of pages: 512
Subjects: ʻUmar ibn al-Khaṭṭāb, -- Caliph, -- d. 644.; Islamic Empire -- Politics and government.