Slavic and East European Collections, The New York Public Library. "Vor Polotzk den 25 July 1812" The New York Public Library Digital Collections. 1831 - 1834. http://digitalcollections.nypl.org/items/510d47df-80e0-a3d9-e040-e00a18064a99
Slavic and East European Collections, The New York Public Library. "Vor Polotzk den 25 July 1812" New York Public Library Digital Collections. Accessed May 21, 2019. http://digitalcollections.nypl.org/items/510d47df-80e0-a3d9-e040-e00a18064a99
Slavic and East European Collections, The New York Public Library. (1831 - 1834). Vor Polotzk den 25 July 1812 Retrieved from http://digitalcollections.nypl.org/items/510d47df-80e0-a3d9-e040-e00a18064a99
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Vor Polotzk den 25 July 1812, (1831 - 1834)
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|author=Digital Collections, The New York Public Library |accessdate=May 21, 2019 |publisher=The New York Public Library, Astor, Lennox, and Tilden Foundation}}</ref>
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