Columbia subject headings:
International Center of Free Trade Unionists in Exile--History--20th century.
Labor unions--Europe--History--20th century.
Labor unions--Latin America--History--20th century.
Liberalism--Europe--History--20th century.
Liberalism--Latin America--History--20th century.
Harvard subject headings:
International Center of Free Trade Unionists in Exile--History--20th century.
Labor unions--Europe--History--20th century.
Labor unions--Latin America--History--20th century.
Liberalism--Europe--History--20th century.
Liberalism--Latin America--History--20th century.
Princeton subject headings:
International Center of Free Trade Unionists in Exile--History--20th century.
Labor unions--Europe--History--20th century.
Labor unions--Latin America--History--20th century.
Liberalism--Europe--History--20th century.
Liberalism--Latin America--History--20th century.