Columbia subject headings:
Historians--Soviet Union--Biography.
Margolis, I︠U︡. D. (I︠U︡riĭ Davidovich)
Harvard subject headings:
Historians--Russia (Federation)--Biography
Historians--Soviet Union--Biography
Margolis, I︠U︡. D. (I︠U︡riĭ Davidovich)
Margolis, I︠U︡. D. (I︠U︡riĭ Davidovich)--Bibliography.
Russia--History--1613-1917.
Princeton subject headings: