TY  - BOOK
AU  - Anand, Vaishali
TI  - Environment and ecology: for civil services preliminary and main examination and other competitive examinations 
SN  - 9789389949421
U1  - 363.7 
PY  - 2022///
CY  - Chennai
PB  - McGraw Hill Education
KW  - Ecology
KW  - Environment
ER  -