Columbia subject headings:
Abd el-Krim, 1882-1963.
Rif (Morocco)--History--19th century.
Rif (Morocco)--History--20th century.
Harvard subject headings:
Abd el-Krim, 1882-1963
Rif (Morocco)--History--19th century.
Rif (Morocco)--History--20th century.
Rif Revolt, 1921-1926
Princeton subject headings:
Abd el-Krim, 1882-1963.
Rif (Morocco)--History--19th century.
Rif (Morocco)--History--20th century.