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Message * Vidy i Soobshchestva V Ėkstremalʹnykh Uslovii︠a︡kh Sbornik, Posvi︠a︡shchennyĭ 75-Letii︠u︡ Akademika I︠u︡rii︠a︡ Ivanovicha Chernova - 5873175330 - 9785873175338