TY  - BOOK
AU  - World Health Organization & SEARO Regional Health Papers No.4
TI  - Low-cost water supply and sanitation technology: pollution and health problems
SN  - 92 9022 173 9
U1  - 614.772 W.H.O./SEARO 
PY  - 1984///
CY  - World Health Organization, New Delhi
ER  -