Columbia subject headings:
International labor activities--History--20th century.
Labor unions--Great Britain--Colonies--History--20th century.
Labour Party (Great Britain)--History--20th century.
Trades Union Congress--History--20th century.
Harvard subject headings:
International labor activities--History--20th century.
Labor unions--Colonies--Great Britain--History--20th century.
Labor unions--Great Britain--Colonies--History--20th century.
Labour Party (Great Britain)--History--20th century.
Trade Union Congress--History--20th century.
Trades Union Congress--History--20th century.
Princeton subject headings:
International labor activities--History--20th century.
Labor unions--Great Britain--Colonies--History--20th century.
Labour Party (Great Britain)--History--20th century.
Trade Union Congress--History--20th century.