The history of the Almohades : preceded by a sketch of the history of Spain, from the times of the conquest till the reign of Yusuf ibn Táshifín, and the history of Almoravides / by Abdo-`l-Wáhid al Marrékoshi ; now first edited from a ms. in the Library of leyden, the only one extant in Europe by R. P. A. Dozy