Columbia subject headings:
Byzantine Empire--History.
Charities--Byzantine Empire.
Hospitals, Medieval--Byzantine Empire.
Public welfare--Byzantine Empire.
Harvard subject headings:
Byzantine Empire--History.
Charities--Byzantine Empire.
Hospitals, Medieval--Byzantine Empire.
Public welfare--Byzantine Empire.
Princeton subject headings:
Byzantine Empire--History.
Charities--Byzantine Empire.
Hospitals, Medieval--Byzantine Empire.
Public welfare--Byzantine Empire.