Columbia subject headings:
Harvard subject headings:
Concord.
Political science--Byzantine Empire.
Thessalonikē (Greece)--Politics and government.
Princeton subject headings:
Byzantine Empire--Civilization--1081-1453.
Harmony (Philosophy)--Political aspects--Early works to 1800.
Thessalonikē (Greece)--Intellectual life.
Thōmas, Magistros, fl. 1310-1327. Tois Thessalonikeuse peri homonoias.