[Diet, hygiene, and biology at European primary schools 1770-1945].
Freyer
H P
HP
D001695:Biology / Q000266:history*; D004032:Diet / Q000266:history*; D005060:Europe; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006920:Hygiene / Q000266:history*; D012572:School Health Services / Q000266:history*; D012574:Schools / Q000266:history*