Columbia subject headings:
Byzantine Empire--Civilization--Bibliography--Catalogs.
Byzantine Empire--Relations--Europe--Bibliography--Catalogs.
Europe--Relations--Byzantine Empire--Bibliography--Catalogs.
Österreichische Nationalbibliothek--Catalogs.
Harvard subject headings:
Byzantine Empire--Civilization--Bibliography--Catalogs.
Byzantine Empire--Relations--Europe--Bibliography--Catalogs.
Europe--Relations--Byzantine Empire--Bibliography--Catalogs.
Österreichische Nationalbibliothek--Catalogs.
Princeton subject headings:
Byzantine Empire--Civilization--Bibliography--Catalogs.
Byzantine Empire--Relations--Europe--Bibliography--Catalogs.
Europe--Relations--Byzantine Empire--Bibliography--Catalogs.
Österreichische Nationalbibliothek--Catalogs.