Columbia subject headings:
Africa, North--Economic conditions.
Africa, North--History--1517-1882.
Africa, North--Social conditions.
Harvard subject headings:
Africa, North--Economic conditions.
Africa, North--History--1517-1882.
Africa, North--Social conditions.
Princeton subject headings:
Africa, North--Economic conditions.
Africa, North--History--1517-1882.
Africa, North--Social conditions.