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2Dahkki Belozerskai︠a︡-Bulgakova, L. E.“...Moscow (Russia) Intellectual life....”
Almmustuhtton 1989
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3Dahkki Berlin, Isaiah, 1909-1997“...Russia Intellectual life 1801-1917....”
Almmustuhtton 1978
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5Dahkki Manuĭlov, V. A. (Viktor Andronikovich), 1903-“...Saint Petersburg (Russia) Intellectual life....”
Almmustuhtton 1979
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6