title: The frontier thesis. [Review of: Achenbaum WA. Crossing frontiers: gerontology emerges as a science. Cambridge University Press, 1995].
authors.forename: E D
authors.initials: ED
authors.lastname: Berkowitz
mesh_terms: D005853:Geriatrics / Q000266:history*; D006663:Historiography; D006666:History of Medicine; D049673:History, 20th Century; D013038:Specialization; D014481:United States