PMCCPMCCPMCC

Search tips
Search criteria 

Advanced
Logo of pubhealthreporigLink to Publisher's site
 
Volume 65(48);  December 1, 1950
Article
Public Health Rep. Dec 1, 1950; 65(48): 1573–1608.
PMCID:
PMC1997111
Articles from Public Health Reports are provided here courtesy of
Association of Schools of Public Health