History 117 Periodicals 35 Description and travel 34 Islam 34 20th century 33 Turkish literature 31 Politics and government 23 Islamic theology 22 Al-Hajj 17 Turkish poetry 15 Bibliography 13 Biography 13 Foreign relations 13 Al-Umrah 12 Arab countries 12 English language 12 Grammar 12 History and criticism 12 Turkish drama 12 Criticism and interpretation 11 Social life and customs 10 Turkey 10 Arabic language 9 Economic conditions 9 Law and legislation 9 Antiquities 8 Arabic 8 Congresses 8 Education 8 Iranian languages 8