Columbia subject headings:
Europe--History, Military--1648-1789--Congresses.
Europe--History--1648-1789--Congresses.
Seven Years' War, 1756-1763--Congresses.
Harvard subject headings:
Europe--History, Military--18th century--Congresses.
Seven Years' War, 1756-1763--Congresses.
Princeton subject headings:
Europe--History, Military--1648-1789--Congresses.
Europe--History--1648-1789--Congresses.
Seven Years' War, 1756-1763--Congresses.