TY  - BOOK
AU  - Harper, David,
TI  - Eutrophication of freshwaters: Principles, problems and restoration 
SN  - 0412329700
AV  - QH96.8E9 H37
PY  - 1992///
CY  - London
PB  - Chapman and Hall
KW  - Eutrofización
ER  -