Columbia subject headings:
Italy--Politics and government--1268-1559.
Italy--Politics and government--1559-1789.
Tuscany (Italy)--Politics and government--1434-1737.
Harvard subject headings:
Cosimo I, Grand-Duke of Tuscany, 1519-1574
Power (Social sciences)--Italy--Tuscany--History--16th century.
Tuscany (Italy)--Politics and government--1434-1737--Historiography.
Tuscany (Italy)--Politics and government--1434-1737.
Princeton subject headings:
Italy--Politics and government--1268-1559.
Italy--Politics and government--1559-1789.
Tuscany (Italy)--Politics and government--1434-1737.