TY  - BOOK
AU  - Duggal K.N.
TI  - Elements of Public Health Engineering
SN  - 11186
U1  - 628.1               
PY  - 1971///
CY  - New Delhi
PB  - S Chand and  Company Ltd.
KW  - water supply sanitation, Public Health Engg. 628.1
ER  -