Search for: [Subject and Keywords = Lenin, Vladimir Il'ič \(1870\-1924\)] OR [Subject and Keywords = Plehanov, Georgij Valentinovič \(1856\-1918\)] OR [Subject and Keywords = Bureau socialiste international] OR [Subject and Keywords = Second International \- history] OR [Subject and Keywords = Lenin, Vladimir Il'ič \(1870\-1924\) \[KABA\]] OR [Subject and Keywords = Plehanov, Georgij Valentinovič \(1856\-1918\) \[KABA\]] OR [Subject and Keywords = Bureau socialiste international] OR [Subject and Keywords = Druga Międzynarodówka \-\- historia \[KABA\]] OR [Title = Lenin i Plechanow w Międzynarodowym Biurze Socjalistycznym \: \(w świetle materiałów Sekretariatu MBS\)] OR [Title = Lenin i Plechanow w Międzynarodowym Biurze Socjalistycznym \: \(w świetle materiałów Sekretariatu MBS\)] OR [Creator = Najdus, Walentyna \(1909–2004\)] OR [Creator = Najdus, Walentyna \(1909–2004\)]