Columbia subject headings:
Harvard subject headings:
Communism--Soviet Union--History
Communists--Soviet Union--Biography
Rykov, A. I. (Alekseĭ Ivanovich), 1881-1938.
Princeton subject headings:
Communism--Soviet Union--History.
Rykov, A. I. (Alekseĭ Ivanovich), 1881-1938.