Template:Pfeiffer, 1840

• Pfeiffer L., 1840. XXVI. Observations on the family Helicidæ, and description of a new genus. pp. 238-242 in Taylor R. and J.E., 1840. Annals of Natural History, Volume 5, Numéros 28 à 33 (Google books, DOI: 10.1080/00222934009496817).  
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