Gray, J. E. (1834). [Several shells, which … referred to a genus to be separated from Helix under the name of Nanina.]. Proceedings of the Zoological Society of London. (1834) 2: 58-59.
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Gray, J. E.
1834
[Several shells, which … referred to a genus to be separated from <em>Helix</em> under the name of <em>Nanina</em>.]