Columbia subject headings:
Harvard subject headings:
Byzantine Empire--History--Leo VI, 886-911--Sources.
Euthymius, patriarch of Constantinople, active 907-912.
Leo VI, Emperor of the East, 866-912.
Princeton subject headings:
Byzantine Empire--History--Leo VI, 886-911.
Euthymios, Patriarch of Constantinople, 832-917.
Leo VI, Emperor of the East, 866-912.