title: Joseph Andorfer Ewan (1909-1999).
authors.forename: I
authors.initials: I
authors.lastname: Jackson
mesh_terms: D001695:Biology / Q000266:history; D004463:Ecology / Q000266:history; D004493:Education / Q000266:history; D006663:Historiography; D049673:History, 20th Century; D019021:Natural History / Q000266:history / Q000379:methods / Q000458:organization & administration / Q000639:trends; D012106:Research / Q000266:history; D012107:Research Design