Columbia subject headings:
Terrorism--Law and legislation--Russia--History--19th century.
Terrorism--Prevention--Law and legislation--Russia--History.
Harvard subject headings:
Russia--Politics and government--1801-1917
Terrorism--Law and legislation--Russia--History--19th century.
Terrorism--Russia--Prevention--History--19th century.
Princeton subject headings:
Terrorism--Law and legislation--Russia--History--19th century.
Terrorism--Prevention--Law and legislation--Russia--History.