TY  - GEN
AU  - Thatheyus,A.Joseph
AU  - 
ED  - 
ED  - 
ED  - 
TI  - Textbook of environmental studies
SN  - 9788184870947
U1  - 363.7 
PY  - 2011///
CY  - New Delhi
PB  - Narosa Publishing
KW  - 
KW  - Environment science
ER  -