TY  - BOOK
AU  - J. H.
TI  - Journal of hygiene
T2  - 74-75
U1  - 614 
PY  - 1975///
KW  - Health and Hygiene
KW  - Hygiene | Epidemiology--Cambridge University Press
N1  - No. S - 149 - 24 / 04.03.1975; Hygiene; Public Health; Epidemiology; Preventive Medicine; Cambridge
ER  -