TY  - BOOK
AU  - Jeffries, Michael
AU  - Mills, Derek
TI  - Freshwater ecology: principles and applications
SN  - 1852930217
U1  - 577.6 21st ed.
PY  - 1990///
CY  - London
PB  - Belhaven Press
KW  - Freshwater ecology
KW  - Man-Influence on nature
KW  - Pollution
N1  - Index: pp 276-85
ER  -