Columbia subject headings:
Thessalonikē (Greece)--History--Sources.
Harvard subject headings:
Byzantine Empire--History--John VIII Palaeologos, 1425-1448.
Byzantine Empire--History--Manuel II Palaeologos, 1391-1425
Thessalonikē (Greece)--History--Siege, 1430--Sources.
Thessalonikē (Greece)--History.
Turkey--History--Murad II, 1421-1451.
Princeton subject headings:
Thessalonikē (Greece)--History--Siege, 1430--Sources.