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Manuel de malacologie et de conchyliologie pl. XLVI. Glaucus atlanticusbr Laniogerus elfortii Glaucus atlanticus Glaucus atlanticusbr Laniogerus elfortii Glaucus atlanticus gonfl et ayant perdu ses cerata cause de la conservation dans l'thanol Rang archive org page Manuel de malacologie et de conchyliologie HenriMarie Ducrotay