TY  - BOOK
AU  - Dobson,Mike
AU  - Frid,Chris  .
TI  - Ecology of aquatic systems / 
SN  - 0582298040
U1  - 577.6 
PY  - 1998///
CY  - London : 
PB  - Longman , 
KW  - AQUATIC ECOLOGY
N1  - includes bibliographical references, glossary and index
ER  -