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Start Over Subjects Mollusca -- classification ✖Remove constraint Subjects: Mollusca -- classification Subjects Alismatales -- classification ✖Remove constraint Subjects: Alismatales -- classification Subjects Fossils ✖Remove constraint Subjects: Fossils Subjects Geologic Sediments ✖Remove constraint Subjects: Geologic Sediments Authors Lea, Isaac, 1792-1886 ✖Remove constraint Authors: Lea, Isaac, 1792-1886 Titles Extracts from the Proceedings of the Academy of Natural Sciences of Philadelphia, of papers ✖Remove constraint Titles: Extracts from the Proceedings of the Academy of Natural Sciences of Philadelphia, of papers Languages English ✖Remove constraint Languages: English Languages Latin ✖Remove constraint Languages: Latin Copyright Public domain ✖Remove constraint Copyright: Public domain

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  • Extracts from the Proceedings of the Academy of Natural Sciences of Philadelphia, of papers1