TY  - BOOK
AU  - Kanagasabai,S.
TI  - Textbook on environmental studies
SN  - 9788120341647 (pbk)
U1  - 301.31 22
PY  - 2010///
CY  - New Delhi
PB  - PHI Learning
KW  - Pollution
KW  - Environmental sciences
N1  - Includes index; Bibliography: P. 161-162
ER  -