TY  - BOOK
AU  - Willoughby,L.G.
TI  - Freshwater biology
SN  - 00465070
AV  - QH .F638, SER
PY  - 2007///
CY  - Oxford
PB  - Blackwell
KW  - Freshwater biology
N1  - Includes bibliographical references and index
ER  -