#1 (May 10, 1990)
Editor's Note
The Zebra Mussel Update was a 4- to 8-page quarterly national newsletter published by the University of Wisconsin Sea Grant Institute from May 1990 through May 1997. The ZMU documented the spread of the zebra mussel -- an exotic nuisance mussel -- through North America's freshwater environments, especially the Great Lakes, and on efforts to control it.
© University of Wisconsin Sea Grant Institute
http://www.seagrant.wisc.edu/Communications/Publications/ZMU/ZMU.html