TY  - BOOK
AU  - Asthana, D.K.
TI  - Textbook of Environmental Studies ( For Undergraduate Students)(As per UGC Model Curriculam)
SN  - 9788121927642
U1  - 574.5 
PY  - 2019///
CY  - New Delhi
PB  - S Chand And Company Limited
ER  -