TY  - BOOK
AU  - Smith, Thomas M
AU  -  Smith, Robert Leo
TI  - Elements of ecology
SN  - 9781292077406
PY  - 2015///
CY  - England 
PB  - Pearson
KW  -  Aquatic ecosystems
KW  -  Community ecology
KW  -  Populations
KW  - Zoology
ER  -