Dreissena! This newsletter is published six times per year by the National Zebra Mussel and Aquatic Nuisance Species Clearinghouse and presents the most current information and summaries of research, meetings, legislation, and sightings of zebra mussels (http://www.entryway.com/seagrant/products.cfm#newsletters). The Clearinghouse has a Web site at http://www.entryway.com/seagrant/ .
Sea Grant Nonindigenous Species Site (SGNIS): http://www.ansc.purdue.edu/sgnis/
USGS Zebra Mussel Information Sources: http://www.fcsc.gov/zebra.mussel/
The U.S. Army Engineer Research and Development Center Zebra Mussel Research Program: http://www.wes.army.mil/el/zebra/zebra.html
The Zebra Mussel Information System (ZMIS) CD-ROM: http://www.wes.army.mil/el/zebra/cd.html