Columbia subject headings:
Asia--Social conditions.
Middle East--Social conditions.
Social structure--Asia--History.
Social structure--Middle East--History.
Harvard subject headings:
Africa, North--Economic conditions.
Africa, North--Social conditions.
Asia--Economic conditions
Asia--Social conditions.
Feudalism--Africa, North--History.
Feudalism--Asia--History.
Princeton subject headings:
Asia--Social conditions.
Middle East--Social conditions.
Social structure--Asia--History.
Social structure--Middle East--History.