Columbia subject headings:
Algeria--Foreign relations--Morocco.
Algeria--History--1830-1962.
Morocco--Foreign relations--Algeria.
Morocco--History--19th century.
Harvard subject headings:
Algeria--History--1830-1962.
Morocco--History--19th century.
Princeton subject headings:
Algeria--Foreign relations--Morocco.
Algeria--History--1830-1962.
Morocco--Foreign relations--Algeria.
Morocco--History--19th century.