Columbia subject headings:
Arab countries--Economic conditions--21st century.
Arab countries--Politics and government--21st century.
Arab countries--Population.
Arab countries--Social conditions--21st century.
Harvard subject headings:
Arab countries--Economic conditions--21st century.
Arab countries--Politics and government--21st century.
Arab countries--Population.
Arab countries--Social conditions--21st century.
Princeton subject headings:
Arab countries--Economic conditions--21st century.
Arab countries--Politics and government--21st century.
Arab countries--Population.
Arab countries--Social conditions--21st century.