J. R. Barta, Y. Boulard, S. S. Desser, Blood Parasites of Rana esculenta from Corsica: Comparison of Its Parasites with Those of Eastern North American Ranids in the Context of Host Phylogeny, Transactions of the American Microscopical Society, Vol. 108, No. 1 (Jan., 1989), pp. 6-20
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