Columbia subject headings:
Moroccans--Spain--History--20th century--Congresses.
Morocco--Foreign relations--Spain--Congresses.
Morocco--History--1912-1956--Congresses.
Spain--Foreign relations--Morocco--Congresses.
Spain--History--Civil War, 1936-1939--Participation, Moroccan--Congresses.
Harvard subject headings:
Moroccans--Spain--History--20th century--Congresses.
Morocco--Foreign relations--Spain--Congresses.
Morocco--History--1912-1956--Congresses.
Spain--Foreign relations--Morocco--Congresses.
Spain--History--Civil War, 1936-1939--Participation, Moroccan--Congresses.
Princeton subject headings:
Moroccans--Spain--History--20th century--Congresses.
Morocco--Foreign relations--Spain--Congresses.
Morocco--History--1912-1956--Congresses.
Spain--Foreign relations--Morocco--Congresses.
Spain--History--Civil War, 1936-1939--Participation, Moroccan--Congresses.