RT Book, Section SR Electronic(1) A1 International Narcotics Control Board YR 2021 T1 Precursors and chemicals frequently used in the illicit manufacture of narcotic drugs and psychotropic substances 2020 T2 Precursors and Chemicals Frequently Used in the Illicit Manufacture of Narcotic Drugs and Psychotropic Substances 2020 PB United Nations SN 9789210056762 DO 10.18356/9789210056762c005 UL https://www.un-ilibrary.org/content/books/9789210056762c005