The map of the area of ​​the Saymensky Canal from the southern part of Lake Nuyayamayarvi to the northern part of Lake Syakkiyar...

The map of the area of ​​the Saymensky Canal from the southern part of Lake Nuyayamayarvi to the northern part of Lake Syakkiyarvi in ​​the Vyborg volost of the Rada Uyezd Vyborg province.4th part.Watman paper.Damage.Comp.in 1858- 1858. -.Electronic copy source: PB