Columbia subject headings:
Europe, Eastern--History--19th century.
Leontʹev, Konstantin, 1831-1891.
Slavs--History.
Slavs.
Harvard subject headings:
Europe, Eastern--History--19th century.
Leontʹev, Konstantin, 1831-1891--Views on Slavs.
Leontʹev, Konstantin, 1831-1891.
Slavs--History.
Slavs.
Princeton subject headings:
Leontʹev, Konstantin, 1831-1891.
Slavs.