TY  - BOOK
AU  - Kha, Taraknath
TI  - পরিবেশ বিজ্ঞান 
U1  - 375.083 
PY  - 2000///
CY  - Kolkata
PB  - D. M. Publication
KW  - Environmental Studies
KW  - Environmental science
KW  - Environment
KW  - Ecology
ER  -