Columbia subject headings:
Alexander II, Emperor of Russia, 1818-1881--Assassination.
Russia--History--Alexander II, 1855-1881.
Harvard subject headings:
Alexander II, Emperor of Russia, 1818-1881
Narodnai͡a voli͡a (Political party : Russia)
Revolutionaries--Soviet Union--Biography
Russia--History--Alexander II, 1855-1881.
Princeton subject headings:
Alexander II, Emperor of Russia, 1818-1881--Assassination.
Russia--History--Alexander II, 1855-1881.