Formats: Text / Subjects: Mollusca -- classification and Geologic Sediments / Authors: Lea, Isaac, 1792-1886 / Titles: Extracts from the Proceedings of the Academy of Natural Sciences of Philadelphia, of papers / Languages: English / Copyright: Public domain - Digital Collections - National Library of Medicine Search Results

Start Over Formats Text ✖ Subjects Mollusca -- classification ✖ Subjects Geologic Sediments ✖ Authors Lea, Isaac, 1792-1886 ✖ Titles Extracts from the Proceedings of the Academy of Natural Sciences of Philadelphia, of papers ✖ Languages English ✖ Copyright Public domain ✖