title: An attempt to summarize and to compare.
authors.affiliation: Netherlands Veterinary History Society, Groenoord, The Netherlands.
authors.forename: P
authors.initials: P
authors.lastname: Leeflang
mesh_terms: D005060:Europe; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D012582:Schools, Veterinary / Q000266:history*