Columbia subject headings:
Muslims--Spain--History--20th century.
Spain--History--Civil War, 1936-1939.
Harvard subject headings:
Muslims--Spain--History--20th century.
Spain--History--Civil War, 1936-1939.
Princeton subject headings:
Moroccans--Spain--History--20th century.
Morocco--History, Military--20th century.
Spain--History--Civil War, 1936-1939--Participation, Moroccan.