Columbia subject headings:
Harvard subject headings:
Culture.
Lotman, I͡U. M. (I͡Uriĭ Mikhaĭlovich), 1922-1993.
Semiotics.
Tartu Riiklik Ülikool
Princeton subject headings:
Culture.
Lotman, I︠U︡. M. (I︠U︡riĭ Mikhaĭlovich), 1922-1993.
Semiotics.