TY  - BOOK
AU  - Speth James Gustav
TI  - Global environmental challenges :  Transitions to a   
SN  - 8125027408
U1  - U:(G:55), P4 
PY  - 2004///
CY  -  New Delhi 
PB  - Orient Longman India       
KW  - Geography - Environment
N1  - Bibliography P 269-275
ER  -