Columbia subject headings:
Cosimo I, Grand-Duke of Tuscany, 1519-1574.
Tuscany (Italy)--Historical geography.
Tuscany (Italy)--Politics and government.
Harvard subject headings:
Cosimo I, Grand-Duke of Tuscany, 1519-1574
Tuscany (Italy)--Historical geography.
Tuscany (Italy)--Politics and government.
Princeton subject headings:
Cosimo I, Grand-Duke of Tuscany, 1519-1574.
Tuscany (Italy)--Historical geography.
Tuscany (Italy)--Politics and government.