Columbia subject headings:
Russians--China--Manchuria--History--Sources.
Russians--Political activity--China--Manchuria--Sources.
Harvard subject headings:
Russians--China--Manchuria--History--Sources.
Russians--China--Manchuria--Political activity--Sources.
Princeton subject headings:
Manchuria (China)--History--20th century--Sources.
Russians--China--Manchuria--Political activity--Sources.