XV sʺezd VKP(b)
CommunismCongressesKommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡zaKommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za. Sʺezd. 1927)
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Book data: Open Library
Book data: Open Library