TY  - GEN
AU  - Vasudevan,Naresh
TI  - Essentials of environmental science
SN  - 8173197067
U1  - 577.4 
PY  - 2006///
CY  - New Delhi
PB  - Narosa pub.
KW  - Environmental sciences
N1  - Includes bibliographical references (p. [284]-289) and index
ER  -