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Keywords from Image Description:
Limacina helicina operculum. Drawing of the operculum of Limacina helicina Sars Bidrag til kundskaben om norges arktiske fauna Mollusca regonis arcticae Norwegiae Oversigt over de norges arktiske region forekommende blddyr Christiania Brgger University of Oslo archive org page table figure Rotated and background retouched Georg