Zatravkin, M.N. (1985). Molluscs of the family Planorbidae from the Sovjet Far East. Proceedings of the Zoological Institute, Leningrad USSR Academy of Sciences, 135: 38-43. Leningrad.
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Zatravkin, M.N.
1985
Molluscs of the family Planorbidae from the Sovjet Far East
Proceedings of the Zoological Institute, Leningrad USSR Academy of Sciences