Practical Manual . — Irkutsk: IPKPR Publishing House of the State Enterprise of the Russian Federation, 2004. — 99 s. The manual contains brief recommendations on the use of the results of verification purchases, as well as other operational and investigative measures in proving in criminal cases of drug trafficking . Particular attention is paid to typical errors and violations of the law, which are allowed by representatives of the prosecution, means of preventing and eliminating errors and violations, including in the framework of judicial proceedings. The algorithm of verification and evaluation of the results of ORD at all stages of criminal proceedings, typical arguments of the defense side and arguments of the prosecution side is proposed. It can be used primarily as a short practical guide - a "memoire" for investigators, prosecutors and their deputies, officials supporting the state prosecution in court and employees of operational-search units .