also known as THC extractions United States Drug Enforcement Administration. Demand Reduction Section, issuing body. text dcu 2014 monographic eng 1 online resource ([2] pages) : color illustrations "December 2014." CRDP Project record. n-us--- Marijuana Study and teaching United States Tetrahydrocannabinol Study and teaching United States Drug abuse Study and teaching United States Teenagers Drug use United States Prevention Drug abuse United States Prevention J 24.2:M 33/5 J 24.2:M 33/5 http://purl.fdlp.gov/GPO/gpo74072 http://purl.fdlp.gov/GPO/gpo74072 GPO 161102 20170826160831.0 ocn961941318 eng