TY  - BOOK
AU  - Harper, David
TI  - Eutrophication of freshwaters: principles, problems and restorat ion 
SN  - 0412329700
U1  - 574.929 
PY  - 1992///, repr.1995
CY  - London
PB  - Chapman & Hall
KW  - Freshwater biology
KW  - Freshwater fauna
KW  - Freshwater phytoplankton
N1  - Includes bibliographical references and index
ER  -