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                                                        Cadet Corps (entry) 
                                                                           
                         
                        CADET CORPS were military educational secondary boarding schools. Until 1917, they were aimed mainly at the nobility. The education began in cadet corps from the ages of 10-12 (in the 1770s-90s, from 5-8), and lasted seven to fifteen years
                                             
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                                                        Demertsov F.I. (1762-1823), arhcitect. 
                                                                           
                         
                        DEMERTSOV Fedor Ivanovich (1762-1823, St. Petersburg), architect, representative of Neoclassicism, State Advisor (1818). Former serf, in 1784 was emancipated. He studied at the School of Fine Arts of Artillery and the Engineering Cadet School in St
                                             
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