Gude G.K., Woodward B.B. (1921). Some emendations to their recent paper "On Helicella, Ferussac". Annals and Magazine of Natural History, ser. 9. 8: 624-626.
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Gude G.K., Woodward B.B.
1921
Some emendations to their recent paper "On Helicella, Ferussac"