Columbia subject headings:
Artists--Germany--History--20th century.
Poets--History--20th century.
World War, 1914-1918.
Harvard subject headings:
Artists--Germany--History--20th century.
Poets--History--20th century.
World War, 1914-1918
Princeton subject headings:
Artists--Germany--History--20th century.
Poets--History--20th century.
World War, 1914-1918.