[An appeal to hygienists].
Seppilli
A
A
D049673:History, 20th Century; D006801:Humans; D006920:Hygiene / Q000266:history; D007558:Italy; D007878:Legislation as Topic / Q000266:history; D011634:Public Health / Q000266:history*; D012581:Schools, Public Health / Q000266:history
Un appello agli igienisti.