TY  - BOOK
AU  - Jeffries,Michael
AU  - Mills,Derek Henry
TI  - Freshwater ecology: principles and applications 
SN  - 1852930217
PY  - 1990///
CY  - London
PB  - Belhaven Press
KW  - Freshwater ecology
KW  - Man
KW  - influence on nature
N1  - p. 254-275
ER  -