On the combination of the Dnieper and Dvina rivers through the rivers of Berezina and Ulla./Cm.Protocol on February 9, 1797/

On the combination of the Dnieper and Dvina rivers through the rivers of Berezina and Ulla./Cm.Protocol on February 9, 1797/.- 1797. -14 l .. - (Council at the "highest" yard .. inventory No. 1).-Film..Electronic copy source: RGIAOriginal storage location: RGIA f.1146 op.1 d.160