Columbia subject headings:
Spain--History--Civil War, 1936-1939.
Harvard subject headings:
Regionalism--Spain--History--20th century--Congresses.
Spain--History--Civil War, 1936-1939--Congresses.
Spain--History--Civil War, 1936-1939--Historiography--Congresses.
Spain--Politics and government--1931-1939--Congresses.
Princeton subject headings: