Columbia subject headings:
Harvard subject headings:
Communists--Soviet Union--Biography
Labor unions--Soviet Union--Officials and employees--Biography.
Radus-Zenʹkovich, V. A. (Viktor Alekseevich), 1878-1967.
Revolutionaries--Soviet Union--Biography
Soviet Union--History--Revolution, 1917-1921--Biography
Princeton subject headings:
Radus-Zenʹkovich, V. A. (Viktor Alekseevich), 1878-1967.
Revolutionaries--Soviet Union--Biography.