00529naa#a2200169#i#450# EN\\bibl\87521 20250907023120.7 2074-8183 20130325b2013####ek#y0engy0150####ca RUS RU CONCEPT AND CORE OF THE LEGAL PROCEDURE OF CONDUCTING OPERATIONAL SEARCH ACTIVITIES Journal article Volgograd Volgograd Academy of the Ministry of Internal Affairs of Russia 2013 10 с. Journal article local va-mvd.editorum.ru