TY JOUR TI BOLT SEALING DEVICES AS OBJECTS OF PRELIMINARY EXAMINATION KW sealing device KW seals effraction KW concealment of unsealing KW features of criminal impact KW state estimation of sealing devices JO Forensics: yesterday, today, tomorrow AU Yakovleva, L.A. PY 2017 IS PB East Siberian institute of the Ministry of Internal Affairs of the Russian Federation