SétifSétif (سطيف, Sṭif) is the capital city of the Sétif Province and the 5th most populous city of Algeria, with an estimated population of 410,000 residents in 2015 in an area of more than 127 km2 (49 sq mi). It is one of the most important cities of eastern Algeria and the country as a whole, since it is considered the trade capital of the country and an industrial pole with 3 industrial zones within the borders of the city.
Encyclopedia of the Brethren of PurityThe Encyclopedia of the Brethren of Purity (رسائل إخوان الصفا, Rasā'il Ikhwān al-ṣafā') also variously known as the Epistles of the Brethren of Sincerity, Epistles of the Brethren of Purity and Epistles of the Brethren of Purity and Loyal Friends is an Islamic encyclopedia in 52 treatises (rasā'il) written by the mysterious Brethren of Purity of Basra, Iraq sometime in the second half of the 10th century CE (or possibly later, in the 11th century).
ViseuViseu (viˈzew) is a city and municipality in the Centro Region of Portugal and the capital of the district of the same name, with a population of nearly 100,000 inhabitants in the entire municipality, and center of the Viseu Dão Lafões intermunipical community, with 267,633 inhabitants. Settled during the period of the early Iberian Castro culture, the territory of Viseu was populated by a series of cultures including the Romans, Suebs, Visigoths and Moors.