TY  - BOOK
AU  - Harper,David M.
TI  - Eutrophication of freshwaters: rinciples, problems, and restoration 
SN  - 0412329700
AV  - QH 96.8 .E9H37 1992
U1  - 574.5/2632 20
PY  - 1992///
CY  - New York
PB  - Chapman & Hall
KW  - Eutrophication
KW  - Control
N1  - Includes bibliographical references  and index
ER  -