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Keywords from Image Description:
Limacina helicina radula . Drawing of detail of radula of Limacina helicina showing three rows of teeth Magnified 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 Plate figure