TY  - BOOK
AU  - Mitra, Bikashranjan
TI  - পরিবেশ বিদ্যা
U1  - 375.083 
PY  - 2000///
CY  - Kolkata
PB  - Aloka Publishing House
KW  - Environmental Studies
KW  - Environmental science
KW  - Environment
KW  - Ecology
ER  -