Columbia subject headings:
Heads of state--Soviet Union--Biography.
Kievan Rus--Kings and rulers--Biography.
Russia--Kings and rulers--Biography.
Harvard subject headings:
Customary law--Mongolia.
Despotism--Russia.
Power (Social sciences)--History
Russia--Kings and rulers.
Russia--Politics and government.
Princeton subject headings:
Heads of state--Soviet Union--Biography.
Kievan Rus--Kings and rulers--Biography.
Russia--Kings and rulers--Biography.