original description
(of Helix pura Alder, 1830) Alder, J. (1830). A catalogue of the land and fresh-water testaceous Mollusca found in the vicinity of Newcastle upon Tyne, with remarks. <em>Transactions of the Natural History Society of Northumberland and Durham.</em> 1(1): 26-41., available online at https://biodiversitylibrary.org/page/33248016
page(s): 37 [details]
additional source
Kerney, M. P., Cameron, R. A. D. & Jungbluth, J.-H. (1983). Die Landschnecken Nord- und Mitteleuropas. Ein Bestimmungsbuch für Biologen und Naturfreunde. <em>Verlag Paul Parey.</em> 384 pp., 24 plates. [Summer or later]. Hamburg / Berlin (Paul Parey).
page(s): 164 [details] Available for editors [request]
additional source
Sysoev, A. V. & Schileyko, A. A. (2009). Land snails and slugs of Russia and adjacent countries. <em>Sofia/Moskva (Pensoft).</em> 312 pp., 142 plates. [June] [= Pensoft Series Faunistica No 87].
page(s): 121, Fig. 59E [details] Available for editors [request]
From editor or global species database