The common fresh-water Bryozoan, Pectinatella magnifica Leidy, with which this paper deals, is widely distributed in the United States, Northern Germany, and Czechoslovakia.
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Geiser, S. W.
"Pectinatella Magnifica Leidy An Occasional River-Pest In Iowa,"
Field and Laboratory: Vol. 5
Available at: https://scholar.smu.edu/fieldandlab/vol5/iss2/6