Columbia subject headings:
Saint Petersburg (Russia)--Intellectual life--19th century--Encyclopedias.
Saint Petersburg (Russia)--Social life and customs--19th century--Encyclopedias.
Harvard subject headings:
Saint Petersburg (Russia)--Intellectual life--19th century--Encyclopedias.
Saint Petersburg (Russia)--Social life and customs--19th century--Encyclopedias.
Princeton subject headings:
Saint Petersburg (Russia)--Social life and customs--19th century.