TY  - BOOK
AU  - World health organization, geneva
TI  - Public health monograph
T2  - 44-63
U1  - 614 
PY  - 1956///
PB  - world health organisation, geneva
KW  - Health and Hygiene
KW  - Public health--Monographs | United States Public Health Service
N1  - Public Health; Monograph; US Public Health Service; Epidemiology
ER  -