TY  - BOOK
AU  - Sinha,Shradha
TI  - A textbook of environmental studies
U1  - 304.2/S615t 22
PY  - 0000///AITBS Pub
PY  - 2008///
CY  - Delhi 
KW  - Environmental studies
KW  - Environment
N1  - Includes index(P324-327) and bibliography.
ER  -