Columbia subject headings:
Social sciences--Soviet Union--History.
Harvard subject headings:
Economics--Soviet Union--History--18th century.
Economics--Soviet Union--History--19th century.
Intellectuals--Russia--Biography.
Russia--Intellectual life--1801-1917.
Russia--Intellectual life--18th century.
Social sciences--Russia--History--18th century.
Social sciences--Russia--History--19th century.
Princeton subject headings:
Social sciences--Soviet Union--History.