PMCCPMCCPMCC

Search tips
Search criteria 

Advanced
Logo of pubhealthreporigLink to Publisher's site
 
Volume 45(40);  October 3, 1930
Article
Public Health Rep. Oct 3, 1930; 45(40): 2365–2427.
PMCID:
PMC2030514
Articles from Public Health Reports are provided here courtesy of
Association of Schools of Public Health