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Helobdella transversa Sawyer 1972
urn:lsid:organismnames.com:name:2244504
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38
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Helobdella transversa Sawyer 1972
Sawyer 1972. North American freshwater leeches, exclusive of the Piscicolidae, with a key to all species. Illinois Biological Monographs, No. 46 1972: 1-154