TY JOUR TI Subjectivity as a factor personal and professional development of a police officer KW subject KW subjectivity KW police officer KW professional activity KW self-development KW self-education KW self-improvement JO Vestnik of the St. Petersburg University of the Ministry of Internal Affairs of Russia AU Gorelov, A.A. AU Gorelov, S.A. AU Silkin, N.N. PY 2020 IS 2020 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION