TY JOUR TI Police law theory – a subject of research of modern scientists KW history of teachings on law and the state KW police law theory KW Russian police science KW E. N. Berendts KW state police force KW constitutional state KW constitutional justice KW administrative justice KW Finnish question JO Vestnik of the St. Petersburg University of the Ministry of Internal Affairs of Russia AU Nizhnik, N.S. PY 2019 IS 2019 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION