Columbia subject headings:
Church history--14th century.
Papacy--History--To 1500.
Harvard subject headings:
Church history--14th century.
Papacy--History--1309-1378
Papacy--History--1378-1447
Schism, The Great Western, 1378-1417.
Princeton subject headings:
Church history--14th century.
Papacy--History--1309-1378.
Papacy--History--1378-1447.
Schism, The Great Western, 1378-1417.