Columbia subject headings:
Civilization.
Lotman, I︠U︡. M. (I︠U︡riĭ Mikhaĭlovich), 1922-1993.
Philology.
Harvard subject headings:
Civilization.
Lotman, I͡U. M. (I͡Uriĭ Mikhaĭlovich), 1922-1993.
Philology.
Princeton subject headings:
Civilization.
Lotman, I︠U︡. M. (I︠U︡riĭ Mikhaĭlovich), 1922-1993.
Philology.