TY  - BOOK
AU  - World Health Organization WHO
TI  - Operation and maintenance of urban water supply and sanitation systems : A guide for managers
SN  - 92-4-154471-6
U1  - 628.1 
PY  - 1994///
CY  - Geneva
PB  - World Health Organization
N1  - World Health Organization WHO: Operation and maintenance of urban water supply and sanitation systems : A guide for managers.  Geneva.  World Health Organization, 1994. 92-4-154471-6--(628.1WOR)
ER  -