Columbia subject headings:
Harvard subject headings:
Byzantine Empire--Ethnic relations.
Byzantine Empire--Relations--Turkey.
Ethnology--Balkan Peninsula
Ethnology--Byzantine Empire.
Turkey--Relations--Byzantine Empire.
Turkic peoples--Balkan Peninsula--History.
Turkic peoples--Byzantine Empire--History.
Turkic peoples--Byzantine Empire.
Princeton subject headings:
Byzantine Empire--Ethnic relations.
Byzantine Empire--Relations--Turkey.
Ethnology--Balkan Peninsula.
Ethnology--Byzantine Empire.
Turkey--Relations--Byzantine Empire.
Turkic peoples--Balkan Peninsula--History.
Turkic peoples--Byzantine Empire--History.