P. Viti︠a︡zev

1886 – 1938

• Chastnye izdatelʹstva v Sovetskoi Rossii
• Materīaly dli͡a bīografīi P.L. Lavrova
• Sobranīe sochinenīĭ Leonida Ėmmanuilovicha Shishko
• Statʹi po filosofīi
• Vpered! ["Forward"!]