Columbia subject headings:
Discoveries in geography--Russian.
Explorers--Russia.
Pacific Area--Discovery and exploration--Russian.
Russia--Colonies--Pacific Area.
Harvard subject headings:
America--Discovery and exploration--Russian.
Discoveries in geography--Russian
Pacific Area--Discovery and exploration--Russian.
Russians--North America--History.
Princeton subject headings:
Discoveries in geography--Russian.
Explorers--Russia.
Pacific Area--Discovery and exploration--Russian.
Russia--Colonies--Pacific Area.