Columbia subject headings:
Peace--Moral and ethical aspects--History--16th century.
Peace--Moral and ethical aspects--History--17th century.
Peace--Political aspects--History--16th century.
Peace--Political aspects--History--17th century.
Harvard subject headings:
Europe--Foreign relations.
Europe--History--1517-1648.
Peace--History
Princeton subject headings:
Europe--Foreign relations.
Europe--History--1517-1648.
Peace--History.