RT Article T1 Islamic hegemonies in the Sudan: Sufism, Mahdism, and Islamism JF Muslim identity and social change in Sub-Saharan Africa SP 21 OP 35 A1 O'Fahey, R.S. LA Undetermined PB Indiana Univ. Press YR 1993 UL https://www.ixtheo.de/Record/56009891X SN 025331271X SN 0253312698