Verrill, Addison Emery, 1874, Synopsis of the North American fresh-water leeches

Verrill, Addison Emery, 1874, Synopsis of the North American fresh-water leeches, Report of the United States Commissioner of Fish and Fisheries 2, pp. 666-689

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urn:lsid:zoobank.org:pub:D4E0071D76694BE587B344F94049223A

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