Social function of coca in pre-Columbian American.
D003041:Coca; D049669:History, 16th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049691:History, Medieval; D006801:Humans; D007199:Indians, South American / Q000266:history*; D010946:Plants, Medicinal; D012067:Religion; D013020:South America; D019966:Substance-Related Disorders