Columbia subject headings:
Harvard subject headings:
Labor and laboring classes--Germany.
Labor and laboring classes--Great Britain.
Labor movement--Great Britain
Reconstruction (1914-1939)
Working class--Germany
Working class--Great Britain
World War, 1914-1918--Economic aspects
Princeton subject headings:
Labor--Germany.
Labor--Great Britain.
Reconstruction (1914-1939)
World War, 1914-1918--Economic aspects.