Columbia subject headings:
Bickerman, E. J. (Elias Joseph), 1897-1981.
Historians.
Rostovtzeff, Michael Ivanovitch, 1870-1952.
Harvard subject headings:
Bickerman, E. J. (Elias Joseph), 1897-1981--Congresses.
Historians--Russia--Biography--Congresses.
Historiography--History--20th century--Congresses.
History, Ancient--Congresses
Rostovtzeff, Michael Ivanovitch, 1870-1952--Congresses.
Russia--Historiography--Congresses.
Princeton subject headings:
Bickerman, E. J. (Elias Joseph), 1897-1981.
Historians.
Rostovtzeff, Michael Ivanovitch, 1870-1952.