Columbia subject headings:
Terrorism--History.
Terrorism--Philosophy.
Terrorism--Political aspects.
Terrorism--Psychological aspects.
Terrorism--Russia--History--19th century.
Terrorism--Russia--History--20th century.
Harvard subject headings:
Russia--History--1801-1917.
Russia--Politics and government--1894-1917.
Terrorism--Russia--History--19th century.
Terrorism--Russia--History--20th century.
Princeton subject headings: