Download or read book Contributions to American Geology Report on the fossil plants of the auriferous gravel deposits of the Sierra Nevada By Leo Lesquereux 1878 The climatic changes of later geological times A discussion based on observations made in the Cordilleras of North America By J D Whitney pt 1 3 1880 1882 written by and published by . This book was released on 1880 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Fossil Shells of the Tertiary Formations of North America written by Timothy Abbott Conrad and published by . This book was released on 1893 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Fossils of the Tertiary Formations of the United States written by Timothy Abbott Conrad and published by . This book was released on 1838 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: