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Ryland, John S. Bryozoans. London: Hutchinson University Library, 1970.
Smith, Douglas G. Pennak's Freshwater Invertebrates of the United States: Porifera to Crustacea. New York: Wiley and Sons, 2001.
Wood, Timothy S. "Bryozoans." In Ecology and Classification of North American Freshwater Bryozoans. 2nd edition, edited by
John Thorp and Alan Covich. San Diego, CA: Academic Press, 2001.
-. Ectoproct Bryozoans of Ohio. Columbus: Ohio Biological
Wood, Timothy S., and Beth Okamura. A New Key to the Freshwater Bryozoans of Britain, Ireland, and Continental Europe. Ambleside, Cumbria, U.K.: Freshwater Biological Association, 2004.
International Bryozoology Association. Web site: <http:// petralia.civgeo.rmit.edu.au/bryozoa/iba.html>
Timothy S. Wood, PhD
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