Columbia subject headings:
Harvard subject headings:
Bologna (Italy)--Church history.
Catholic Church--Italy--Bologna--History.
Italy--Church history--16th century.
Papal legates--Italy--Bologna--History.
Sixtus V, Pope, 1520-1590.
Princeton subject headings:
Bologna (Italy)--History--Papal rule, 1506-1797.
Church and state--Italy--Bologna--History--16th century.
Papal States. Legazione di Bologna
Sixtus V, Pope, 1520-1590.