TY  - BOOK
AU  - Biswas,Pratul ,
TI  - Environmental studies : open elective paper 
SN  - 9789352996667
PY  - 2019///
CY  - New Delhi
PB  - Vision book house
KW  - Environment studies
KW  - Eco systems
KW  - Human communities and the environment
KW  - Filed work
ER  -