Columbia subject headings:
Catholic Church--History--Sources.
Schism, The Great Western, 1378-1417--Catalogs.
Harvard subject headings:
Bulls, Papal--Abstracts.
Bulls, Papal.
Catholic Church--History--Sources.
Church history--Middle Ages, 600-1500--Sources.
Manuscripts, Latin (Medieval and modern)
Manuscripts, Latin (Medieval and modern)--Abstracts.
Manuscripts--Denmark--Copenhagen.
Papacy--History--Sources--Abstracts.
Schism, The Great Western, 1378-1417--Manuscripts--Abstracts.
Schism, The Great Western, 1378-1417--Sources--Abstracts.
Princeton subject headings: