Columbia subject headings:
Philosophy, Russian.
Philosophy, Ukrainian.
Russia (Federation)--Relations--Ukraine.
Ukraine--Relations--Russia (Federation)
Harvard subject headings:
Philosophy, Russian--19th century.
Philosophy, Ukrainian.
Philosophy--Soviet Union--History--19th century.
Philosophy--Ukraine.
Princeton subject headings:
Philosophy, Russian.
Philosophy, Ukrainian.
Russia (Federation)--Relations--Ukraine.
Ukraine--Relations--Russia (Federation).