TY  - GEN
AU  - Mann, H.T.
AU  - Williamson, D.
TI  - Water treatment and sanitation : a handbook of simple methods for rural areas in developing countries
SN  - 090303123X
PY  - 1982///
CY  - London
PB  - Intermediate Technology Publications
KW  - WATER SUPPLY
KW  - WATER TREATMENT
ER  -