Columbia subject headings:
Harvard subject headings:
Jews, Russian--United States.
Jews, Soviet--United States.
Jews--Soviet Union--History.
Jews--Soviet Union--Politics and government--1917-
Soviet Union--Emigration and immigration.
United States--Emigration and immigration.
Princeton subject headings:
Jews, Russian--United States.
Jews--Soviet Union--Politics and government.
Soviet Union--Emigration and immigration.
United States--Emigration and immigration.