TY  - BOOK
AU  - GKP
TI  - UPSC civil services courseware for preliminary and main examination: environment, ecology and biodiversity 
U1  - 577 GKP 
PY  - 2019///
CY  - India
PB  - G K Publications
KW  - Environment protection
KW  - Competitive exam
KW  - Ecology
KW  - UPSC civil services
KW  - Natural resources
ER  -