TY JOUR TI ON THE IMPORTANCE OF DEPARTMENTAL PROCEDURAL CONTROL AT THE FINAL STAGE OF THE PRELIMINARY INVESTIGATION KW departmental procedural control; head of the investigative body; head of the body of enquiry; head of the subdivision of enquiry; differentiation; unification JO Bulletin of the Kazan Law Institute of MIA Russia AU Kuznecova, E.V. PY 2025 IS 16 PB Kazan law institute Ministry of Internal Affairs Russian Federation