Columbia subject headings:
Harvard subject headings:
American literature--20th century--Dictionaries--History and criticism.
English literature--Dictionaries
Literature--Lexicography.
Russian literature--Dictionaries--History and criticism.
Princeton subject headings:
Concordances.
English language--Glossaries, vocabularies, etc.
English literature--Concordances.
Russian language--Glossaries, vocabularies, etc.
Russian literature--Concordances.