PMCCPMCCPMCC

Search tips
Search criteria 

Advanced
Logo of pubhealthreporigLink to Publisher's site
 
Volume 43(8);  February 24, 1928
Article
Public Health Rep. Feb 24, 1928; 43(8): 449–495.
PMCID:
PMC1996706
Articles from Public Health Reports are provided here courtesy of
Association of Schools of Public Health