TY  - GEN
AU  - Chaturvedi, D.D.
TI  - Environmental Studies
SN  - 978-93-82209-03-4
AV  - 363.7 Q7 
U1  - 363.7 Q7 2nd rev.
PY  - 2017///
CY  - New Delhi
PB  - Scholar Tech Press
KW  - Environmental problems,Commerce
ER  -