Tri Duba — folwark in Polock county Vitebsk Governorate of the Russian Empire.
Information presented on the Radzima.net: 
Location of the folwark Tri Duba
— geographic coordinates and depiction of the folwark Tri Duba on early-20th-century detailed maps, modern maps, and satellite imagery (Google Maps). Administrative affiliation of the folwark Tri Duba
— the administrative-territorial units to which the settlement belonged in different historical periods:— Russian Empire (1870-1910s),This information is available for registered users with a Premium plan.
