Columbia subject headings:
Harvard subject headings:
Arabs--Byzantine Empire.
Armenia--History--Bagratuni dynasty, 885-1045
Byzantine Empire--History--527-1081
Egypt--History--640-1250
Georgia (Republic)--History--To 1801
Patriarchs and patriarchate--Middle East--History--To 1500.
Syria--History--750-1260
Princeton subject headings:
Arabic language--Texts.
Byzantine Empire--History--527-1081--Sources.