TY  - BOOK
AU  - Jeffries, Mike J.,
AU  - Mills, Derek Henry.
TI  -  Freshwater ecology: principles and applications 
SN  - 1852930217
U1  - 577.6  22
PY  - 1990///
CY  - London,  New York
PB  - Belhaven Press
KW  - Freshwater ecology
KW  - Nature
KW  -  Effect of human beings on
N1  - Includes bibliographical references (p. [254]-275) and indexes
ER  -