History Description and travel 13 Politics and government 11 Arab countries 7 Periodicals 6 Social life and customs 6 Arabian Peninsula 5 Art 5 Revolution, 1918-1923 5 Biography 4 Civilization 4 Economic conditions 4 Foreign relations 4 Ottoman Empire, 1288-1918 4 Turkey 4 history 4 Antiquities 3 Arabs 3 Bibliography 3 Colonies 3 Islam 3 Kings and rulers 3 Law and legislation 3 Mechanical engineering 3 Muslims 3 Saudi Arabia 3 Social conditions 3 1919- 2 20th century 2 AL-Andalus ( Spain ) 2