TY  - BOOK
AU  - Joseph, Kurian and Nagendran, R 
TI  - Essential of environmental studies 
SN  - 81-297-0498-6 
U1  - 628 JOS  
PY  - 2005///
CY  - Pearson education of asia 
PB  - New Delhi 
KW  - ENVIRONMENTAL STUDIES
ER  -