Sonin, M. D. (1986). Keys to the identification of trematodes of fish-eating birds of the Palaearctic (opisthorchids, renicolids, strigeids). Nauka, Moscow.. 215 pp. (In Russian).
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Sonin, M. D.
1986
Keys to the identification of trematodes of fish-eating birds of the Palaearctic (opisthorchids, renicolids, strigeids)