Columbia subject headings:
Harvard subject headings:
Education--Germany--History--20th century
Germany--History--1871-1918.
Militarism--Germany--History--20th century.
School discipline--Germany--History--20th century.
School hygiene--Germany--History--20th century.
Princeton subject headings:
Education--Germany--History--20th century.
Germany--History--1871-1918.
Militarism--Germany--History--20th century.
School discipline--Germany--History--20th century.
School hygiene--Germany--History--20th century.