Columbia subject headings:
Harvard subject headings:
Prisoners' writings, German.
World War, 1914-1918--Personal narratives, German
World War, 1914-1918--Prisoners and prisons, French
Princeton subject headings:
Prisoners' writings, German.
World War, 1914-1918--Personal narratives, German.
World War, 1914-1918--Prisoners and prisons, French.