Columbia subject headings:
Harvard subject headings:
Populism--Russia (Federation)--History--19th century.
Populism--Russia--History--19th century.
Social reformers--Russia (Federation)--History--19th century.
Socialism--Russia (Federation)--History--19th century.
Socialism--Russia--History--19th century.
Princeton subject headings:
Populism--Soviet Union--History--19th century.