There has been data ("Abu Dschafar al-Mansur: Kalif, Abbasiden, As- Saffah, Abu Muslim, Chorassan, Schiiten, Kufa, Medina, Theokratie") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Fri Jan 10 16:18:53 2020, so the data displayed here has been removed .