Columbia subject headings:
Service industries workers--Spain--History.
Spain--History--Civil War, 1936-1939.
Harvard subject headings:
Service industries workers--Spain--History.
Service industries--Spain--History.
Spain--History--Civil War, 1936-1939--Economic aspects.
Princeton subject headings:
Service industries workers--Spain--History.
Service industries--Spain--History.
Spain--History--Civil War, 1936-1939--Economic aspects.