title: 1972 anniversaries.
mesh_terms: D002170:Canada; D004739:England; D005060:Europe; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D009462:Neurology / Q000266:history; D011570:Psychiatry / Q000266:history*; D011584:Psychology / Q000266:history*; D014481:United States