TY  - BOOK
AU  -   Smith, Thomas M.
AU  - Smith, Robert Leo
TI  - Elements of ecology
SN  - 9788131715574
U1  - 577.22  Sm511e6 
PY  - 2006///
CY  - New Delhi
PB  - Pearson Education
KW  - Ecology
KW  - Physical environment
KW  - climate
KW  - Populations
ER  -