TY  - BOOK
AU  - Ambasht, R.S.
TI  - Environment & pollution: an ecological approach 
U1  - 574.5 
PY  - 1990///
CY  - Lanka Varansi
PB  - Students friends & co.
KW  - Environmental Science
KW  - Pollution--Environmental aspects
N1  - Includes bibliographical reference and index
ER  -