Crone, PatriciaPatriciaCrone2018-09-282018-09-281994Crone, Patricia, ‘Were the Qays and Yemen of the Umayyad Period Political Parties?’ Der Islam 71, no. 1 (1994), 1–57 (= From Arabian Tribes to Islamic Empire, no. IV).0021-1818https://hdl.handle.net/20.500.12111/5510enShabanMuhammad Abd al-Hayy MuhammadUmayyad dynastyTribesJournal article