TY  - BOOK
AU  - CHARY S.N.
TI  - Environmental studies
SN  - 9870230635319
U1  - U:(G55), P8 
PY  - 2008///
CY  -  New Delhi 
PB  - Macmillan         
KW  - Geography
N1  - Bibliography: Chapterwise
ER  -