RT Article T1 Muslim Revival in Spain in the fifth/eleventh Century: Causes and Ramifications JF Der Islam VO 67 IS 1 SP 78 OP 110 A1 Kassis, Hanna E. LA English PB De Gruyter YR 1990 UL https://ixtheo.de/Record/152313948X DO 10.1515/islm.1990.67.1.78