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                                                                                                  Prokopovich Sergey Nikolaevich
                                                      
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                                                        Prokopovich S. N. (1871-1955), public figure 
                                                                           
                         
                        PROKOPOVICH Sergey Nikolaevich (1871-1955) was a public figure, economist, statistician, a theorist of cooperation, Ph. D. in philosophy from Bern University (1913)
                                             
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                                                        Union of Liberation, political organization 
                                                                           
                         
                        UNION OF LIBERATION was an illegal political organization of liberal democratic orientation. It was founded in 1903. The constituent congress was held in St. Petersburg on 3-5 January 1904 in the flats of lawyer I.A
                                             
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