Columbia subject headings:
Byzantine Empire--History.
Byzantine Empire--Relations--Ukraine--Crimea.
Crimea (Ukraine)--Relations--Byzantine Empire.
Si︠u︡zi︠u︡mov, M. I︠A︡. (Mikhail I︠A︡kovlevich), 1893-1982.
Harvard subject headings:
Byzantine Empire--History.
Byzantine Empire--Relations--Ukraine--Crimea.
Crimea (Ukraine)--Relations--Byzantine Empire.
Si︠u︡zi︠u︡mov, M. I︠A︡. (Mikhail I︠A︡kovlevich), 1893-1982.
Princeton subject headings:
Byzantine Empire--History.
Byzantine Empire--Relations--Ukraine--Crimea.
Crimea (Ukraine)--Relations--Byzantine Empire.
Si︠a︡zi︠u︡mov, M. I︠A︡. (Mikhail I︠A︡kovlevich), 1893-1982.