Columbia subject headings:
Austria--History--Maria Theresa, 1740-1780--Sources.
Prussia (Germany)--History--Frederick II, 1740-1786--Sources.
Seven Years' War, 1756-1763.
Harvard subject headings:
Austria--History--Maria Theresa, 1740-1780--Sources.
Prussia (Germany)--History--Frederick II, 1740-1786--Sources.
Seven Years' War, 1756-1763--Sources.
Princeton subject headings: