TY  - BOOK
AU  - Chatwal, Gurdeep R.
AU  - Sharma, Harish 
AU  - Arora, Madhu 
TI  - A Text book of environmental studies (environmental science)
SN  - 9789350515228
U1  - 363.72  
PY  - 2005/// (2017 reprint)
CY  - Mumbai
PB  - Himalaya Publishing House
KW  - Environmental sciences
ER  -