Columbia subject headings:
Harvard subject headings:
Communism--History--21st century.
Internationalism--History--21st century.
Labor movement--History--21st century.
Socialism--History--21st century.
Princeton subject headings:
Communism--History--21st century.
Globalization--Economic aspects.
Internationalism--History--20th century.
Internationalism--History--21st century.
Marxian economics--History--21st century.
Socialism--History--20th century.
Socialism--History--21st century.
Solidarity--Political aspects.
Working class--International cooperation.