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Monte A. Mayes, Daniel R. Brooks, Thomas B. Thorson, Two New Species of Acanthobothrium Van Beneden 1849 (Cestoidea: Tetraphyllidea) from Freshwater Stingrays in South America, The Journal of Parasitology, Vol. 64, No. 5 (Oct., 1978), pp. 838-841
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Mayes et al. (1978) studied this question.
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