TY  - BOOK
AU  - Smith,Thomas M.
AU  - Smith,Robert Leo  .
TI  - Elements of ecology / 
SN  - 9788131715574
U1  - 577 
PY  - 2006///
CY  - England : 
PB  - Pearson Education , 
KW  - ECOLOGY
N1  - Includes index
ER  -