Spanish agriculture and malaria in the 18th century.
D000383:Agriculture / Q000266:history*; D002929:Cinchona; D004196:Disease Outbreaks / Q000266:history*; D049671:History, 18th Century; D006801:Humans; D008288:Malaria / Q000453:epidemiology / Q000266:history*; D010946:Plants, Medicinal; D011157:Population Dynamics; D013030:Spain