Columbia subject headings:
Revolutionaries--Soviet Union--Biography.
Secretaries--Biography.
Statesmen--Soviet Union--Biography.
Trotsky, Leon, 1879-1940.
Van Heijenoort, Jean, 1912-1986.
Harvard subject headings:
Revolutionaries--Soviet Union--Biography
Secretaries--Biography.
Statesmen--Soviet Union--Biography.
Trotsky, Leon, 1879-1940
Van Heijenoort, Jean, 1912-1986
Princeton subject headings:
Revolutionaries--Soviet Union--Biography.
Secretaries--Biography.
Statesmen--Soviet Union--Biography.
Trotsky, Leon, 1879-1940.
Van Heijenoort, Jean, 1912-1986.