Columbia subject headings:
Harvard subject headings:
Europe--Politics and government--1517-1648.
Europe--Politics and government--1648-1789.
European federation--Early works to 1800.
Peace
Peace--Early works to 1800.
Princeton subject headings:
Europe--Politics and government--1517-1648--Early works to 1800.
Europe--Politics and government--1648-1789--Early works to 1800.
Peace.