Columbia subject headings:
Egypt--History--1517-1882.
Taxation--Egypt--History.
ʻUmar ibn al-Khaṭṭāb, Caliph, -644.
Harvard subject headings:
Princeton subject headings:
Egypt--History--1517-1882.
Taxation--Egypt--History.
ʻUmar ibn al-Khaṭṭāb, Caliph, -644.