The history of opium.
D049668:History, 15th Century; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049690:History, Ancient; D049691:History, Medieval; D049711:History, Modern 1601-; D006801:Humans; D009892:Opium / Q000266:history*; D019966:Substance-Related Disorders / Q000266:history
D009892:Opium