Ryding Sven-Olof Editor Control of Eutrophication of lakes and reservoirs Ryding Sven-Olof Editor; Rast Walter Editor - Paris UNESCO and UK Parthenon publishing group ltd. France 1989 - 314 p cm. - Man and biosphere series ed by John Jeffers . ISBN: 0929858131 Standard No.: 20129 Source: Textual Subjects--Topical Terms: BIOLOGY Dewey Class. No.: G:555:7, M9