Columbia subject headings:
World War, 1914-1918--Prisoners and prisons, German.
Harvard subject headings:
Soviet Union--History--Revolution, 1917-1921--Personal narratives.
World War, 1914-1918--Prisoners and prisons, German
Princeton subject headings:
Personal narratives.
Soviet Union--History--Revolution, 1917-1921--Personal narratives.
World War, 1914-1918--Prisoners and prisons, German.