TY  - BOOK
AU  - Tiwari, S.C 	
TI  - Concepts of modern ecology /			
SN  - 9788121101394
U1  - 577 TIW 
PY  - 2005///
CY  - India : 
PB  - Bishen Singh Mahendra Pal Singh ,	
N1  - Includes Index
ER  -