TY  - BOOK
AU  - Huisman, L.
AU  - Wood, W. E.
TI  - Slow sand filtration
SN  - 92-4-154037-0
U1  - 614.7 
PY  - 1974///
CY  - Geneva
PB  - World Health Oraganization
KW  - WHO
KW  - Public health -- Epidemiology
N1  - Gift; WHO, public health, epidemiology, global health
ER  -