Map of the Irtysh River from the top to the Omsk fortress with the situation of previously unknown ancient villages of the Zyung...

The map of the Irtysh River from the top to the Omsk fortress with the situation of previously unknown ancient villages of the Zyungorsky Kalmyk / Izleniev I. - 1778. -6707 Treaty No. 04/12/2019-PB-K of December 04, 2019..Electronic copy source: PB