title: A letter by Carl Linnaeus to von Haller.
authors: G H
authors: GH
authors: Lawrence
mesh_terms: D001901:Botany / Q000193:education / Q000266:history; D002965:Classification; D015709:Correspondence as Topic / Q000266:history; D005060:Europe / Q000208:ethnology; D049671:History, 18th Century; D019021:Natural History / Q000193:education / Q000266:history; D019370:Observation; D010820:Physicians / Q000266:history; D012108:Research Personnel / Q000193:education / Q000266:history / Q000523:psychology