TY  - BOOK
AU  - Sinha,Shradha
AU  - Shukla,Manisha and Shula,Ranjana
TI  - A text book of environmental studies
SN  - 9788174733023
U1  - 370.1 
PY  - 2017///
CY  - Dehli
PB  - AITBS Publishers
KW  - Chemistry
N1  - Includes index
ER  -