Columbia subject headings:
Bremen (Germany)--Politics and government.
City-states--Europe--History--16th century.
City-states--Europe--History--17th century.
Hamburg (Germany)--Politics and government.
Lübeck (Germany)--Politics and government.
Venice (Italy)--Politics and government.
Harvard subject headings:
Bremen (Germany)--Politics and government.
City-states--Europe--History--16th century.
City-states--Europe--History--17th century.
Hamburg (Germany)--Politics and government.
Lübeck (Germany)--Politics and government.
Venice (Italy)--Politics and government.
Princeton subject headings: