Columbia subject headings:
Harvard subject headings:
Arctic regions--Discovery and exploration.
Explorers--Soviet Union--Biography
Samoĭlovich, R. L. (Rudolʹf Lazarevich), 1881-1940.
Princeton subject headings:
Arctic regions--Discovery and exploration--Russian.
Explorers--Soviet Union--Biography.
Samoĭlovich, R. L. (Rudolʹf Lazarevich), 1881-1940.