Columbia subject headings:
Harvard subject headings:
Byzantine Empire--Civilization--Periodicals.
Greece--Civilization--Periodicals.
Spain--Civilization--Greek influences--Periodicals.
Princeton subject headings:
Byzantine Empire--Civilization--Periodicals.
Greece--Civilization--Periodicals.
Periodicals.
Spain--Civilization--Byzantine influences--Periodicals.
Spain--Civilization--Greek influences--Periodicals.