TY  - BOOK
AU  - Singh, Bharat and Gupta, D L.
TI  - Elements of public health engineering: water supply and sanitary engineering
U1  - 628 
PY  - 1977///
CY  - Ludhiana
PB  - Katson Publshing House
KW  - Public health engineering
KW  - Sanitary engineering
ER  -