TY  - BOOK
AU  - Ambasht, R.S.
TI  - Environment and pollution: an ecological approach
U1  - 577.27 21st ed.
PY  - 1990///
CY  - Varanasi
PB  - Students Friends and Co.
KW  - Ecology
KW  - Ecosystems
KW  - Pollution
ER  -