TY  - BOOK
AU  - Sinha, Jyoti
AU  - Bhardwaj, Avdesh
TI  - Enviromental science
SN  - 9788175156326
U1  - 628 
PY  - 2011///
CY  - New Delhi
PB  - Galgotia Publications
KW  - Humanities
ER  -