Columbia subject headings:
Harvard subject headings:
Church and state--History
Church history--15th century.
Council of Basel (1431-1449 : Basel, Switzerland)
Schism, The Great Western, 1378-1417.
Princeton subject headings:
Church and state--History.
Church history--15th century.
Council of Basel (1431-1449)
Schism, The Great Western, 1378-1417.