
| Description | 
   
    A detailed plan of the capital's city of St. Petersburg.- 1828. -2537 Treaty No. 04/12/2019-PB-K of December 04, 2019..Electronic copy source: PB   
 | 
      
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| Description | 
   
    A detailed plan of the capital's city of St. Petersburg.- 1828. -2537 Treaty No. 04/12/2019-PB-K of December 04, 2019..Electronic copy source: PB   
 | 
      
|---|