TY - BOOK AU - Bergman, Eva AU - Hansson, Lars-Anders TI - Nutrient reduction and biomanipulation as tools to improve water quality : the Lake Ringsjön story SN - 792359550 SN - 99043424 U1 - 577.6315809486 HAN PY - 1999/// CY - Dordrecht ; Boston PB - Kluwer Academic Publishers KW - Biomanipulation - Sweden - Ringsjön KW - Eutrophication - Sweden - Ringsjön N1 - Includes bibliographical references and index ER -