Columbia subject headings:
Byzantine empire--History--Sources--Bibliography.
Byzantine empire--History--Sources.
Greece--History--323-1453--History--Sources.
Roman law.
Harvard subject headings:
Byzantine Empire--History--Sources.
Greece--History--323-1453--Sources.
Princeton subject headings:
Byzantine Empire--History--Sources--Bibliography.
Byzantine Empire--History--Sources.
Greece--History--323-1453--Sources.