Columbia subject headings:
Likhachev, D. S. (Dmitriĭ Sergeevich)
Poetics.
Russia--Civilization.
Russian literature--History and criticism.
Harvard subject headings:
Likhachev, D. S. (Dmitriĭ Sergeevich)
Poetics
Russia--Civilization.
Russian literature--History and criticism
Russian literature--To 1700--History and criticism
Princeton subject headings:
Russia--Civilization.
Russian literature--To 1700--History and criticism.