TY  - BOOK
AU  - Singh, Y. K.
TI  - Environmental science
SN  - 9788122418484
AV  - GF41 .S56 2006
PY  - 2006///
CY  - Bangalore
PB  - New Age International Publishers
KW  - Environmental science
N1  - Includes glossary and bibliographical references
ER  -