Columbia subject headings:
Melanesia--Discovery and exploration.
Melanesia--Relations--Soviet Union.
Scientific expeditions--Melanesia--History--19th century.
Soviet Union--History, Naval.
Soviet Union--Relations--Melanesia.
Harvard subject headings:
Melanesia--Discovery and exploration--Russian.
Melanesia--Relations--Soviet Union.
Soviet Union--Relations--Melanesia.
Princeton subject headings:
Melanesia--Discovery and exploration.
Melanesia--Relations--Russia.
Russia--History, Naval.
Russia--Relations--Melanesia.
Scientific expeditions--Melanesia--History--19th century.