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Roberts, L.S. (1970). Ergasilus (Copepoda: Cyclopoida): revision and key to species in North America. Transactions of the American Microscopical Society 89:134-161, figs. 1-33. (22-iv-1970)
Roberts, L.S. (1970). Ergasilus (Copepoda: Cyclopoida): revision and key to species in North America. Transactions of the American Microscopical Society 89:134-161, figs. 1-33. (22-iv-1970)
