TY  - BOOK
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  - 1976///
CY  - London
PB  - Intermediate Technology
KW  - Public health--Developing countries--Handbooks, manuals, etc. Waste water. Disposal--Developing countries
ER  -