TY  - BOOK
AU  - Singh, K.K  	
AU  - Singh, A.K ; Tomar, Alka & Singh, Vinod
TI  - Environmental degradation and protection (Vol. I) /			
U1  - 333.72 SIN  
PY  - 2007///
CY  - New Delhi
PB  - MD Publications Pvt. Ltd.	
N1  - Includes index
ER  -