TY  - BOOK
AU  - Swiss, Helvetas
TI  - Manual for rural water supply
U1  - 628.1 
PY  - 1989///
CY  - Jodhpur
PB  - Geo-Environ Academia
KW  - Environmental science
KW  - Rural water supply
KW  - Water supply
N1  - Includes bibliographical references and index
ER  -