Columbia subject headings:
Harvard subject headings:
General strikes--Spain.
Socialism--Spain--History
Spain--Economic policy.
Spain--Politics and government--1982-
Spain--Social conditions--1975-
Spain--Social policy.
Syndicalism--Spain--History.
Princeton subject headings:
Labor movement--Spain--History--20th century.
Labor unions--Spain--History--20th century.
Socialism--Spain--20th century.