TY  - BOOK
AU  - SINGH, Y K
TI  - Environmental science
SN  - 9788122418484
U1  - 363.7 SIN 
PY  - 2018///
CY  - Bangalore
PB  - New age international (P) Limited, Publishers
KW  - Envornmental problems (363.7)
N1  - Environmental ; science
ER  -