Fazl Ahmad Omar : the second caliph of Islam / Fazl Ahmad - Lahore; Pakistan : Sh. Muhammad Ashraf, 1975. - 101p. ; 8 cm. Subjects--Topical Terms: ʻUmar ibn al-Khaṭṭāb, -- Caliph, -- -644. Caliphs. Caliphs -- Biography. Dewey Class. No.: 297.092 / AHO 1975