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Date: 2011-09-10 17:02:20Biology Water pollution Environmental science Aquatic ecology Lemna Lemnoideae Water quality Bioassay Wetland Aquatic plants Environment Water | The Volunteer Monitor, Vol. 8, No. 2, Fall 1996Add to Reading ListSource URL: water.epa.govDownload Document from Source WebsiteFile Size: 166,71 KBShare Document on Facebook |