Columbia subject headings:
Aesthetics.
Art, Russian--History.
Luhmann, Niklas, 1927-1998.
Russia--Civilization--1801-1917.
Russia--Civilization--18th century.
Social systems.
System theory.
Harvard subject headings:
Aesthetics
Art--Russia--History.
Luhmann, Niklas, 1927-1998
Russia--Civilization--1801-1917.
Russia--Civilization--18th century.
Social systems.
System theory
Princeton subject headings:
Aesthetics.
Art--Russia--History.
Luhmann, Niklas, 1927-1998.
Russia--Civilization--1801-1917.
Russia--Civilization--18th century.
Social systems.
System theory.