Columbia subject headings:
Harvard subject headings:
Korea--Foreign relations--1864-1910.
Korea--Foreign relations--Russia.
Korea--Foreign relations--Soviet Union.
Russia--Foreign relations--1894-1917.
Russia--Foreign relations--Korea.
Soviet Union--Foreign relations--Korea.
Princeton subject headings:
Korea--Foreign relations--1864-1910.
Korea--Foreign relations--Russia.
Korea--Foreign relations--Soviet Union.
Russia--Foreign relations--1894-1917.
Russia--Foreign relations--Korea.
Soviet Union--Foreign relations--Korea.