Columbia subject headings:
Biography--20th century.
Communist countries--Biography.
Harvard subject headings:
Biography--20th century
Biography--20th century--Dictionaries
Communist countries--Biography--Dictionaries.
Communist countries--Biography.
Communists--Biography--Dictionaries.
Princeton subject headings:
Biography--20th century--Dictionaries.
Communist countries--Biography--Dictionaries.
Communists--Biography--Dictionaries.
Dictionaries.