Columbia subject headings:
Spain--History--Civil War, 1936-1939.
Harvard subject headings:
Spain--History--Civil War, 1936-1939
Spain--History--Civil War, 1936-1939--Anecdotes.
Spain--History--Civil War, 1936-1939--Humor.
Princeton subject headings:
Comics (Graphic works)
Spain--History--Civil War, 1936-1939.
Spain--History--Comic books, strips, etc.