Pfeiffer, L. (1857). Neue Landschnecken. <em>Malakozoologische Blätter.</em> 4 (3): 85-89. Cassel [May]. page(s): 87; note: name attributed to Parreyss [details]
MolluscaBase eds. (2021). MolluscaBase. Helix corax L. Pfeiffer, 1857. Accessed at: http://www.molluscabase.org/aphia.php?p=taxdetails&id=1490800 on 2024-05-13
original descriptionPfeiffer, L. (1857). Neue Landschnecken. <em>Malakozoologische Blätter.</em> 4 (3): 85-89. Cassel [May]. page(s): 87; note: name attributed to Parreyss [details]
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