Columbia subject headings:
Harvard subject headings:
Austria--Foreign relations--Germany--Prussia.
Austria--History
Austria--History--19th century.
Austria--Politics and government--1848-1918.
Austria--Politics and government--20th century.
Austria--Relations--Germany--Prussia.
Austro-Prussian War, 1866.
Germany--History--1789-1900.
Germany--History--20th century.
Germany--Politics and government--1789-1900
Germany--Politics and government--20th century
Habsburg, House of.
Prussia (Germany)--Foreign relations--Austria.
Prussia (Germany)--History.
Prussia (Germany)--Relations--Austria.
Princeton subject headings:
Austria--History--19th century.
Austria--Politics and government--1848-1918.
Austria--Relations--Germany--Prussia.
Austro-Prussian War, 1866.
Germany--History--1789-1900.
Germany--History--20th century.
Germany--Politics and government--1789-1900.
Germany--Politics and government--20th century.
Prussia (Germany)--Relations--Austria.