Slaves and Slavery in Africa Volume Two: The Servile Estate Willis John Ralph Innbundet / 1986 / Engelsk
Slaves and Slavery in Africa Volume One: Islam and the Ideology of Enslavement Willis John Ralph Heftet / 2016 / Engelsk
Studies in West African Islamic History The Cultivators of Islam Willis John Ralph Heftet / 2018 / Engelsk
Slaves and Slavery in Africa Volume One: Islam and the Ideology of Enslavement Willis John Ralph Innbundet / 1986 / Engelsk
Slaves and Slavery in Africa Volume Two: The Servile Estate Willis John Ralph Heftet / 2016 / Engelsk
Studies in West African Islamic History The Cultivators of Islam Willis John Ralph Innbundet / 2017 / Engelsk
In the Path of Allah 'Umar, An Essay into the Nature of Charisma in Islam' Willis John Ralph Innbundet / 1989 / Engelsk
In the Path of Allah 'Umar, An Essay into the Nature of Charisma in Islam' Willis John Ralph Heftet / 2016 / Engelsk
