Columbia subject headings:
Heinrich, von Langenstein, approximately 1325-1397.
Schism, The Great Western, 1378-1417.
Tracts.
Harvard subject headings:
Heinrich, von Langenstein, approximately 1325-1397--Views on Great Western Schism.
Heinrich, von Langenstein, approximately 1325-1397. Epistola concilii pacis
Heinrich, von Langenstein, approximately 1325-1397. Epistola pacis
Schism, The Great Western, 1378-1417--Early works to 1800.
Princeton subject headings:
Heinrich, von Langenstein, approximately 1325-1397.
Schism, The Great Western, 1378-1417.
Tracts.