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Sawyer, Roy T.; Lawler, Adrian R.; Overstreet, Robin M. (1975). Marine leeches of the eastern United States and the Gulf of Mexico with a key to the species. Journal of Natural History. 9(6): 633-667.
Sawyer, Roy T.; Lawler, Adrian R.; Overstreet, Robin M. (1975). Marine leeches of the eastern United States and the Gulf of Mexico with a key to the species. Journal of Natural History. 9(6): 633-667.
