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