Borzunov V. Ancient fortifications of the forest strip of the Urals and Western Siberia. Volume 4. Neolithic and Eneolithic. In Russian/Borzunov V. Drevnie ukrepleniya lesnoy polosy Urala i Zapadnoy Sibiri. V 4-kh tomakh.Tom 1. Neolit i eneolit.. Ekaterinburg: 2020, 576 p. Please contact us for details on condition of available copies of the book. SKUalbb6c69baf5c50fdf4