Columbia subject headings:
Christianity and politics--Catholic Church--History--To 1500.
Papacy--History--To 1500.
Harvard subject headings:
Boniface VIII, Pope, -1303.
Church and state--Catholic Church--History--To 1500.
Papacy--History--1309-1378
Papacy--History--To 1309
Political science--Europe--History--To 1500.
Popes--Primacy--History.
Popes--Temporal power--History--To 1500.
Thomas, Aquinas, Saint, 1225?-1274--Contributions in political science.
William, of Ockham, approximately 1285-approximately 1349--Contributions in political science.
Princeton subject headings:
Church and state--History--To 1500.
Papacy--History--1309-1378.
Popes--Temporal power--History--To 1500.