TY  - BOOK
AU  - Venugopalaravu,Pemmaraju
TI  - Textbook of environmental engineering
SN  - 8120319303 (pbk).
PY  - 2002///
CY  - New Delhi
PB  - Prentice Hall of India
KW  - Environmental engineering
KW  - Environmental health
KW  - Sanitary engineering
KW  - Sanitation
N1  - Bibliography : p. 263
ER  -