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Start Over Formats Text ✖Remove constraint Formats: Text Subjects Lenses ✖Remove constraint Subjects: Lenses Titles Some remarks on the Navicula Spencerii, and on a still more difficult test object ✖Remove constraint Titles: Some remarks on the Navicula Spencerii, and on a still more difficult test object

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  • Some remarks on the Navicula Spencerii, and on a still more difficult test object1