TY  - BOOK
AU  - Shah, B R
AU  - Popli Shehal.
TI  - Basics of environmental studies
SN  - 9789380109480 
U1  - 628.5 
PY  - 1994///
CY  - Ahmedabad
PB  - Mahajan Pub
KW  - Sanitary municipal engineering
ER  -