TY  - BOOK
AU  - Shah Shefali M
AU  - Goyal Roopali V.
TI  - Basics of environmental studies
SN  - 0
U1  - 628.5 
PY  - 1994///
CY  - [S.L]
PB  - Atul Prakashan
KW  - Sanitary municipal engineering
ER  -