Não informado. (1954). Bulletin. Institute for the Study of the History and Culture of the Ussr.
Chicago-referens (17:e uppl.)Não informado. Bulletin. Munich, Alemanha: Institute for the Study of the History and Culture of the Ussr, 1954.
MLA-referens (8:e uppl.)Não informado. Bulletin. Institute for the Study of the History and Culture of the Ussr, 1954.
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