title: [William Thierry Preyer (1841-18970) as methodologist and methodic].
mesh_terms: D005858:Germany; D049672:History, 19th Century; D010827:Physiology / Q000266:history; D002666:Psychology, Child / Q000266:history
vernacular_title: William Thierry Preyer (1841-1897) als Methodologe und Methodiker.