TY  - BOOK
AU  - Mann, H. T.
TI  - Water treatment and sanitation 
SN  - 090303123X :
U1  - 628.72091724 MAN 
PY  - 1976///
CY  - London 
PB  - Intermediate Technology Publications
KW  - Water;Sewage;Rural health;Public health
ER  -