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Authors whose works are in public domain in at least one jurisdiction

List of works by William Morris Davis

Flora of Mount Desert Island, Maine ⬇️

book by Edward L. Rand and John H. Redfield

The butterflies of the eastern United States and Canada : with special reference to New England ⬇️

Cambridge :The author,1889. | MBL

cycle of erosion

idealized model that explains the development of relief in landscapes

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