PMCCPMCCPMCC

Search tips
Search criteria 

Advanced
Logo of pubhealthreporigLink to Publisher's site
 
Volume 62(7);  February 14, 1947
Article
Public Health Rep. Feb 14, 1947; 62(7): 225–259.
PMCID:
PMC1995248
Articles from Public Health Reports are provided here courtesy of
Association of Schools of Public Health