This directory lists competent national authorities empowered to issue certificates and authorisation for the import and export of narcotic drugs and psychotropic substances; and competent national authorities empowered to regulate or enforce national controls over precursors and essential chemicals; International bodies that might assist national competent authorities in case no authority is listed for a given country or region, or in case contact cannot be established with the listed authorities. The directory also includes contact details of national competent authorities or international bodies and is issued annually.